20020121012020 has 48 divisors (see below), whose sum is σ = 44360123472000. Its totient is φ = 7568551751040.

The previous prime is 20020121011987. The next prime is 20020121012113. The reversal of 20020121012020 is 2021012102002.

It is a happy number.

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, 62410720 + ... + 62730679.

It is an arithmetic number, because the mean of its divisors is an integer number (924169239000).

Almost surely, 2^{20020121012020} is an apocalyptic number.

20020121012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020121012020 is an abundant number, since it is smaller than the sum of its proper divisors (24340002459980).

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

20020121012020 is a wasteful number, since it uses less digits than its factorization.

20020121012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125141848 (or 125141846 counting only the distinct ones).

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

Adding to 20020121012020 its reverse (2021012102002), we get a palindrome (22041133114022).

The spelling of 20020121012020 in words is "twenty trillion, twenty billion, one hundred twenty-one million, twelve thousand, twenty".