23021111213211 has 24 divisors (see below), whose sum is σ = 31426346615040. Its totient is φ = 14989967264496.

The previous prime is 23021111213167. The next prime is 23021111213293. The reversal of 23021111213211 is 11231211112032.

It is not a de Polignac number, because 23021111213211 - 2¹⁵ = 23021111180443 is a prime.

It is a super-2 number, since 2×23021111213211² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23021111213411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217605850 + ... + 217711616.

It is an arithmetic number, because the mean of its divisors is an integer number (1309431108960).

Almost surely, 2^{23021111213211} is an apocalyptic number.

23021111213211 is a deficient number, since it is larger than the sum of its proper divisors (8405235401829).

23021111213211 is a wasteful number, since it uses less digits than its factorization.

23021111213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145095 (or 145052 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 23021111213211 its reverse (11231211112032), we get a palindrome (34252322325243).

The spelling of 23021111213211 in words is "twenty-three trillion, twenty-one billion, one hundred eleven million, two hundred thirteen thousand, two hundred eleven".