21211000111022 has 16 divisors (see below), whose sum is σ = 32359918316400. Its totient is φ = 10424406843840.

The previous prime is 21211000110983. The next prime is 21211000111069. The reversal of 21211000111022 is 22011100011212.

It is a junction number, because it is equal to n+sod(n) for n = 21211000110988 and 21211000111006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10619879 + ... + 12458082.

It is an arithmetic number, because the mean of its divisors is an integer number (2022494894775).

Almost surely, 2^{21211000111022} is an apocalyptic number.

21211000111022 is a deficient number, since it is larger than the sum of its proper divisors (11148918205378).

21211000111022 is a wasteful number, since it uses less digits than its factorization.

21211000111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23085811.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21211000111022 its reverse (22011100011212), we get a palindrome (43222100122234).

The spelling of 21211000111022 in words is "twenty-one trillion, two hundred eleven billion, one hundred eleven thousand, twenty-two".