21012022210120 has 32 divisors (see below), whose sum is σ = 47289971059200. Its totient is φ = 8402511802048.

The previous prime is 21012022210103. The next prime is 21012022210141. The reversal of 21012022210120 is 2101222021012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21012022210094 and 21012022210103.

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, 71635624 + ... + 71928343.

It is an arithmetic number, because the mean of its divisors is an integer number (1477811595600).

Almost surely, 2^{21012022210120} is an apocalyptic number.

21012022210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21012022210120 is an abundant number, since it is smaller than the sum of its proper divisors (26277948849080).

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

21012022210120 is a wasteful number, since it uses less digits than its factorization.

21012022210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143567637 (or 143567633 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21012022210120 its reverse (2101222021012), we get a palindrome (23113244231132).

The spelling of 21012022210120 in words is "twenty-one trillion, twelve billion, twenty-two million, two hundred ten thousand, one hundred twenty".