21120121011022 has 48 divisors (see below), whose sum is σ = 37263659147136. Its totient is φ = 8886446223600.

The previous prime is 21120121010797. The next prime is 21120121011037. The reversal of 21120121011022 is 22011012102112.

It is a junction number, because it is equal to n+sod(n) for n = 21120121010987 and 21120121011005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21230368 + ... + 22202899.

It is an arithmetic number, because the mean of its divisors is an integer number (776326232232).

Almost surely, 2^{21120121011022} is an apocalyptic number.

21120121011022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21120121011022 is a deficient number, since it is larger than the sum of its proper divisors (16143538136114).

21120121011022 is a wasteful number, since it uses less digits than its factorization.

21120121011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43433365 (or 43433334 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21120121011022 its reverse (22011012102112), we get a palindrome (43131133113134).

The spelling of 21120121011022 in words is "twenty-one trillion, one hundred twenty billion, one hundred twenty-one million, eleven thousand, twenty-two".