20022121620620 has 48 divisors (see below), whose sum is σ = 48493945980480. Its totient is φ = 6801748257024.

The previous prime is 20022121620619. The next prime is 20022121620667. The reversal of 20022121620620 is 2602612122002.

It is a self number, because there is not a number n which added to its sum of digits gives 20022121620620.

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, 656017559 + ... + 656048078.

It is an arithmetic number, because the mean of its divisors is an integer number (1010290541260).

Almost surely, 2^{20022121620620} is an apocalyptic number.

20022121620620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022121620620 is an abundant number, since it is smaller than the sum of its proper divisors (28471824359860).

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

20022121620620 is a wasteful number, since it uses less digits than its factorization.

20022121620620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312065762 (or 1312065760 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 20022121620620 its reverse (2602612122002), we get a palindrome (22624733742622).

The spelling of 20022121620620 in words is "twenty trillion, twenty-two billion, one hundred twenty-one million, six hundred twenty thousand, six hundred twenty".