21211010111022 has 64 divisors (see below), whose sum is σ = 44943448596480. Its totient is φ = 6659728460000.

The previous prime is 21211010110957. The next prime is 21211010111059. The reversal of 21211010111022 is 22011101011212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21211010110992 and 21211010111010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6930397 + ... + 9510647.

It is an arithmetic number, because the mean of its divisors is an integer number (702241384320).

Almost surely, 2^{21211010111022} is an apocalyptic number.

21211010111022 is an abundant number, since it is smaller than the sum of its proper divisors (23732438485458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211010111022 is a wasteful number, since it uses less digits than its factorization.

21211010111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581189.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21211010111022 its reverse (22011101011212), we get a palindrome (43222111122234).

The spelling of 21211010111022 in words is "twenty-one trillion, two hundred eleven billion, ten million, one hundred eleven thousand, twenty-two".