20021022010120 has 32 divisors (see below), whose sum is σ = 45047474988120. Its totient is φ = 8008377610240.

The previous prime is 20021022010117. The next prime is 20021022010133. The reversal of 20021022010120 is 2101022012002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12862967904004 + 7158054106116 = 3586498^2 + 2675454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20021022010120.

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, 11345010 + ... + 12990430.

Almost surely, 2^{20021022010120} is an apocalyptic number.

20021022010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021022010120 is an abundant number, since it is smaller than the sum of its proper divisors (25026452978000).

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

20021022010120 is a wasteful number, since it uses less digits than its factorization.

20021022010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949625 (or 1949621 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20021022010120 its reverse (2101022012002), we get a palindrome (22122044022122).

The spelling of 20021022010120 in words is "twenty trillion, twenty-one billion, twenty-two million, ten thousand, one hundred twenty".