201021010120 has 64 divisors (see below), whose sum is σ = 517718044800. Its totient is φ = 68813905920.

The previous prime is 201021010111. The next prime is 201021010133. The reversal of 201021010120 is 21010120102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 201021010097 and 201021010106.

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, 380530 + ... + 739489.

It is an arithmetic number, because the mean of its divisors is an integer number (8089344450).

Almost surely, 2^201021010120 is an apocalyptic number.

201021010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021010120 is an abundant number, since it is smaller than the sum of its proper divisors (316697034680).

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

201021010120 is a wasteful number, since it uses less digits than its factorization.

201021010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120678 (or 1120674 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201021010120 its reverse (21010120102), we get a palindrome (222031130222).

The spelling of 201021010120 in words is "two hundred one billion, twenty-one million, ten thousand, one hundred twenty".