21121021000022 has 32 divisors (see below), whose sum is σ = 33087086930784. Its totient is φ = 10101790713600.

The previous prime is 21121020999929. The next prime is 21121021000039. The reversal of 21121021000022 is 22000012012112.

It is a junction number, because it is equal to n+sod(n) for n = 21121020999970 and 21121021000006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8279522 + ... + 10525802.

It is an arithmetic number, because the mean of its divisors is an integer number (1033971466587).

Almost surely, 2^{21121021000022} is an apocalyptic number.

21121021000022 is a deficient number, since it is larger than the sum of its proper divisors (11966065930762).

21121021000022 is a wasteful number, since it uses less digits than its factorization.

21121021000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248464.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21121021000022 its reverse (22000012012112), we get a palindrome (43121033012134).

The spelling of 21121021000022 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-one million, twenty-two", and thus it is an aban number.