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21302022301 = 721399713221
BaseRepresentation
bin10011110101101100…
…110001000010011101
32000222120111212001221
4103311230301002131
5322111304203201
613441440133341
71352612126200
oct236554610235
960876455057
1021302022301
11904148870a
124166007251
132016370231
1410611b1937
1584a20a4a1
hex4f5b3109d

21302022301 has 24 divisors (see below), whose sum is σ = 24991636320. Its totient is φ = 18103226400.

The previous prime is 21302022289. The next prime is 21302022319. The reversal of 21302022301 is 10322020312.

It is not a de Polignac number, because 21302022301 - 229 = 20765151389 is a prime.

It is a super-2 number, since 2×213020223012 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302022101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6611871 + ... + 6615091.

It is an arithmetic number, because the mean of its divisors is an integer number (1041318180).

Almost surely, 221302022301 is an apocalyptic number.

It is an amenable number.

21302022301 is a deficient number, since it is larger than the sum of its proper divisors (3689614019).

21302022301 is a wasteful number, since it uses less digits than its factorization.

21302022301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345 (or 4338 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21302022301 its reverse (10322020312), we get a palindrome (31624042613).

The spelling of 21302022301 in words is "twenty-one billion, three hundred two million, twenty-two thousand, three hundred one".

Divisors: 1 7 49 139 971 973 3221 6797 6811 22547 47579 134969 157829 447719 944783 3127591 3134033 6613481 21893137 21938231 153251959 434735149 3043146043 21302022301