201331402120 has 32 divisors (see below), whose sum is σ = 453013989120. Its totient is φ = 80529301440.

The previous prime is 201331402109. The next prime is 201331402127. The reversal of 201331402120 is 21204133102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201331402127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063369 + ... + 1238311.

It is an arithmetic number, because the mean of its divisors is an integer number (14156687160).

Almost surely, 2^201331402120 is an apocalyptic number.

201331402120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201331402120 is an abundant number, since it is smaller than the sum of its proper divisors (251682587000).

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

201331402120 is a wasteful number, since it uses less digits than its factorization.

201331402120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203725 (or 203721 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201331402120 its reverse (21204133102), we get a palindrome (222535535222).

The spelling of 201331402120 in words is "two hundred one billion, three hundred thirty-one million, four hundred two thousand, one hundred twenty".