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22230121221 = 3471114712423
BaseRepresentation
bin10100101101000001…
…001011101100000101
32010101020220011110000
4110231001023230011
5331011402334341
614113512351513
71414611625020
oct245501135405
963336804400
1022230121221
119478362110
1243849a5599
1321337244a9
14110c5641b7
158a19378b6
hex52d04bb05

22230121221 has 80 divisors (see below), whose sum is σ = 41447374848. Its totient is φ = 11535501600.

The previous prime is 22230121217. The next prime is 22230121231. The reversal of 22230121221 is 12212103222.

It is not a de Polignac number, because 22230121221 - 22 = 22230121217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22230121194 and 22230121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22230121231) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9173416 + ... + 9175838.

Almost surely, 222230121221 is an apocalyptic number.

22230121221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22230121221 is a deficient number, since it is larger than the sum of its proper divisors (19217253627).

22230121221 is a wasteful number, since it uses less digits than its factorization.

22230121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924 (or 3915 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22230121221 its reverse (12212103222), we get a palindrome (34442224443).

The spelling of 22230121221 in words is "twenty-two billion, two hundred thirty million, one hundred twenty-one thousand, two hundred twenty-one".

Divisors: 1 3 7 9 11 21 27 33 63 77 81 99 189 231 297 567 693 891 1471 2079 2423 4413 6237 7269 10297 13239 16181 16961 21807 26653 30891 39717 48543 50883 65421 79959 92673 113267 119151 145629 152649 186571 196263 239877 278019 339801 436887 457947 559713 719631 834057 1019403 1310661 1373841 1679139 2158893 3058209 3564233 5037417 9174627 10692699 15112251 24949631 32078097 39206563 74848893 96234291 117619689 224546679 274445941 288702873 352859067 673640037 823337823 1058577201 2020920111 2470013469 3175731603 7410040407 22230121221