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22222221102001 = 1391811229718691
BaseRepresentation
bin1010000110110000000111…
…00110000100101110110001
32220200102102210111222112001
411003120003212010232301
510403042102100231001
6115132425240334001
74452334232515624
oct503300346045661
986612383458461
1022222221102001
117098433530928
1225aa994a74301
13c5271475142b
1456b7c0085dbb
152880b703d001
hex143603984bb1

22222221102001 has 16 divisors (see below), whose sum is σ = 22524094756800. Its totient is φ = 21922574788800.

The previous prime is 22222221101999. The next prime is 22222221102017. The reversal of 22222221102001 is 10020112222222.

It is a cyclic number.

It is not a de Polignac number, because 22222221102001 - 21 = 22222221101999 is a prime.

It is a super-2 number, since 2×222222211020012 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22222221102001.

It is not an unprimeable number, because it can be changed into a prime (22222221102901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30561066 + ... + 31279756.

It is an arithmetic number, because the mean of its divisors is an integer number (1407755922300).

Almost surely, 222222221102001 is an apocalyptic number.

It is an amenable number.

22222221102001 is a deficient number, since it is larger than the sum of its proper divisors (301873654799).

22222221102001 is a wasteful number, since it uses less digits than its factorization.

22222221102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720240.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22222221102001 its reverse (10020112222222), we get a palindrome (32242333324223).

The spelling of 22222221102001 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, one".

Divisors: 1 139 181 1229 25159 170831 222449 718691 30920411 99898049 130083071 883271239 18081546869 122774702221 159872094259 22222221102001