31001211122212 has 12 divisors (see below), whose sum is σ = 56610907266816. Its totient is φ = 14826666188840.

The previous prime is 31001211122201. The next prime is 31001211122239. The reversal of 31001211122212 is 21222111210013.

It is a super-2 number, since 2×31001211122212² (a number of 28 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 31001211122212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168484842964 + ... + 168484843147.

It is an arithmetic number, because the mean of its divisors is an integer number (4717575605568).

Almost surely, 2^{31001211122212} is an apocalyptic number.

It is an amenable number.

31001211122212 is a deficient number, since it is larger than the sum of its proper divisors (25609696144604).

31001211122212 is a wasteful number, since it uses less digits than its factorization.

31001211122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336969686138 (or 336969686136 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 31001211122212 its reverse (21222111210013), we get a palindrome (52223322332225).

The spelling of 31001211122212 in words is "thirty-one trillion, one billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twelve".