20210120012100 has 36 divisors (see below), whose sum is σ = 58474613902544. Its totient is φ = 5389365336480.

The previous prime is 20210120012057. The next prime is 20210120012101. The reversal of 20210120012100 is 121002101202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20210120012101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33683533054 + ... + 33683533653.

Almost surely, 2^{20210120012100} is an apocalyptic number.

20210120012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210120012100 is an abundant number, since it is smaller than the sum of its proper divisors (38264493890444).

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

20210120012100 is a wasteful number, since it uses less digits than its factorization.

20210120012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67367066724 (or 67367066717 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20210120012100 its reverse (121002101202), we get a palindrome (20331122113302).

The spelling of 20210120012100 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, twelve thousand, one hundred".