9131220303212 has 48 divisors (see below), whose sum is σ = 19501605150720. Its totient is φ = 3656550945600.

The previous prime is 9131220303097. The next prime is 9131220303253. The reversal of 9131220303212 is 2123030221319.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 181351364 + ... + 181401707.

It is an arithmetic number, because the mean of its divisors is an integer number (406283440640).

Almost surely, 2^{9131220303212} is an apocalyptic number.

It is an amenable number.

9131220303212 is an abundant number, since it is smaller than the sum of its proper divisors (10370384847508).

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

9131220303212 is a wasteful number, since it uses less digits than its factorization.

9131220303212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362753142 (or 362753140 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 9131220303212 in words is "nine trillion, one hundred thirty-one billion, two hundred twenty million, three hundred three thousand, two hundred twelve".