20021010120104 has 32 divisors (see below), whose sum is σ = 42902308627200. Its totient is φ = 8580404091840.

The previous prime is 20021010120103. The next prime is 20021010120119. The reversal of 20021010120104 is 40102101012002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20021010120103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30275714 + ... + 30929934.

It is an arithmetic number, because the mean of its divisors is an integer number (1340697144600).

Almost surely, 2^{20021010120104} is an apocalyptic number.

It is an amenable number.

20021010120104 is an abundant number, since it is smaller than the sum of its proper divisors (22881298507096).

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

20021010120104 is a wasteful number, since it uses less digits than its factorization.

20021010120104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200713 (or 1200709 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021010120104 its reverse (40102101012002), we get a palindrome (60123111132106).

The spelling of 20021010120104 in words is "twenty trillion, twenty-one billion, ten million, one hundred twenty thousand, one hundred four".