31211130222212 has 24 divisors (see below), whose sum is σ = 54634929099072. Its totient is φ = 15601151124000.

The previous prime is 31211130222197. The next prime is 31211130222227. The reversal of 31211130222212 is 21222203111213.

It is an interprime number because it is at equal distance from previous prime (31211130222197) and next prime (31211130222227).

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, 213145262 + ... + 213291642.

It is an arithmetic number, because the mean of its divisors is an integer number (2276455379128).

Almost surely, 2^{31211130222212} is an apocalyptic number.

It is an amenable number.

31211130222212 is a deficient number, since it is larger than the sum of its proper divisors (23423798876860).

31211130222212 is a wasteful number, since it uses less digits than its factorization.

31211130222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161099 (or 161097 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 31211130222212 its reverse (21222203111213), we get a palindrome (52433333333425).

The spelling of 31211130222212 in words is "thirty-one trillion, two hundred eleven billion, one hundred thirty million, two hundred twenty-two thousand, two hundred twelve".