201021310120 has 64 divisors (see below), whose sum is σ = 454378890240. Its totient is φ = 80038886400.

The previous prime is 201021310109. The next prime is 201021310153. The reversal of 201021310120 is 21013120102.

It is a super-2 number, since 2×201021310120² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201021310120.

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, 34999969 + ... + 35005711.

It is an arithmetic number, because the mean of its divisors is an integer number (7099670160).

Almost surely, 2^201021310120 is an apocalyptic number.

201021310120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021310120 is an abundant number, since it is smaller than the sum of its proper divisors (253357580120).

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

201021310120 is a wasteful number, since it uses less digits than its factorization.

201021310120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626 (or 9622 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 201021310120 its reverse (21013120102), we get a palindrome (222034430222).

The spelling of 201021310120 in words is "two hundred one billion, twenty-one million, three hundred ten thousand, one hundred twenty".