31220011002212 has 12 divisors (see below), whose sum is σ = 54650553830460. Its totient is φ = 15605567050656.

The previous prime is 31220011002179. The next prime is 31220011002223. The reversal of 31220011002212 is 21220011002213.

It can be written as a sum of positive squares in 2 ways, for example, as 29503842881536 + 1716168120676 = 5431744^2 + 1310026^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109596787 + ... + 1109624922.

It is an arithmetic number, because the mean of its divisors is an integer number (4554212819205).

Almost surely, 2^{31220011002212} is an apocalyptic number.

It is an amenable number.

31220011002212 is a deficient number, since it is larger than the sum of its proper divisors (23430542828248).

31220011002212 is a wasteful number, since it uses less digits than its factorization.

31220011002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219225230 (or 2219225228 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31220011002212 its reverse (21220011002213), we get a palindrome (52440022004425).

Subtracting from 31220011002212 its reverse (21220011002213), we obtain a palindrome (9999999999999).

The spelling of 31220011002212 in words is "thirty-one trillion, two hundred twenty billion, eleven million, two thousand, two hundred twelve".