21000222101120 has 64 divisors (see below), whose sum is σ = 50413713465600. Its totient is φ = 8364941964288.

The previous prime is 21000222101083. The next prime is 21000222101149. The reversal of 21000222101120 is 2110122200012.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 21000222101095 and 21000222101104.

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, 68493164 + ... + 68799083.

It is an arithmetic number, because the mean of its divisors is an integer number (787714272900).

Almost surely, 2^{21000222101120} is an apocalyptic number.

21000222101120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000222101120 is an abundant number, since it is smaller than the sum of its proper divisors (29413491364480).

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

21000222101120 is a wasteful number, since it uses less digits than its factorization.

21000222101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137292505 (or 137292493 counting only the distinct ones).

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

Adding to 21000222101120 its reverse (2110122200012), we get a palindrome (23110344301132).

The spelling of 21000222101120 in words is "twenty-one trillion, two hundred twenty-two million, one hundred one thousand, one hundred twenty".