20020020002120 has 16 divisors (see below), whose sum is σ = 45045045004860. Its totient is φ = 8008008000832.

The previous prime is 20020020002053. The next prime is 20020020002131. The reversal of 20020020002120 is 2120002002002.

It can be written as a sum of positive squares in 2 ways, for example, as 19520332185124 + 499687816996 = 4418182^2 + 706886^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250250249987 + ... + 250250250066.

Almost surely, 2^{20020020002120} is an apocalyptic number.

20020020002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020020002120 is an abundant number, since it is smaller than the sum of its proper divisors (25025025002740).

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

20020020002120 is a wasteful number, since it uses less digits than its factorization.

20020020002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500500500064 (or 500500500060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20020020002120 its reverse (2120002002002), we get a palindrome (22140022004122).

The spelling of 20020020002120 in words is "twenty trillion, twenty billion, twenty million, two thousand, one hundred twenty".