21121101022000 has 160 divisors (see below), whose sum is σ = 59557812163200. Its totient is φ = 7241520115200.

The previous prime is 21121101021983. The next prime is 21121101022003. The reversal of 21121101022000 is 22010112112.

It is a super-2 number, since 2×21121101022000² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21121101022003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14708389 + ... + 16080388.

It is an arithmetic number, because the mean of its divisors is an integer number (372236326020).

Almost surely, 2^{21121101022000} is an apocalyptic number.

21121101022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21121101022000 is an abundant number, since it is smaller than the sum of its proper divisors (38436711141200).

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

21121101022000 is an equidigital number, since it uses as much as digits as its factorization.

21121101022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30788821 (or 30788791 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21121101022000 its reverse (22010112112), we get a palindrome (21143111134112).

The spelling of 21121101022000 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred one million, twenty-two thousand".