201311132120 has 32 divisors (see below), whose sum is σ = 517657197600. Its totient is φ = 69020959488.

The previous prime is 201311132111. The next prime is 201311132131. The reversal of 201311132120 is 21231113102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359483885 + ... + 359484444.

It is an arithmetic number, because the mean of its divisors is an integer number (16176787425).

Almost surely, 2^201311132120 is an apocalyptic number.

201311132120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201311132120 is an abundant number, since it is smaller than the sum of its proper divisors (316346065480).

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

201311132120 is a wasteful number, since it uses less digits than its factorization.

201311132120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718968347 (or 718968343 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201311132120 its reverse (21231113102), we get a palindrome (222542245222).

The spelling of 201311132120 in words is "two hundred one billion, three hundred eleven million, one hundred thirty-two thousand, one hundred twenty".