21120010001022 has 32 divisors (see below), whose sum is σ = 45126808502400. Its totient is φ = 6569932409568.

The previous prime is 21120010001009. The next prime is 21120010001053. The reversal of 21120010001022 is 22010001002112.

It is a junction number, because it is equal to n+sod(n) for n = 21120010000989 and 21120010001007.

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, 1382553897 + ... + 1382569172.

It is an arithmetic number, because the mean of its divisors is an integer number (1410212765700).

Almost surely, 2^{21120010001022} is an apocalyptic number.

21120010001022 is an abundant number, since it is smaller than the sum of its proper divisors (24006798501378).

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

21120010001022 is a wasteful number, since it uses less digits than its factorization.

21120010001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765123160.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21120010001022 its reverse (22010001002112), we get a palindrome (43130011003134).

The spelling of 21120010001022 in words is "twenty-one trillion, one hundred twenty billion, ten million, one thousand, twenty-two".