31100021122222 has 16 divisors (see below), whose sum is σ = 51463824823152. Its totient is φ = 14003761855680.

The previous prime is 31100021122171. The next prime is 31100021122241. The reversal of 31100021122222 is 22222112000113.

It is a super-2 number, since 2×31100021122222² (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 31100021122222.

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, 14587250868 + ... + 14587252999.

It is an arithmetic number, because the mean of its divisors is an integer number (3216489051447).

Almost surely, 2^{31100021122222} is an apocalyptic number.

31100021122222 is a deficient number, since it is larger than the sum of its proper divisors (20363803700930).

31100021122222 is a wasteful number, since it uses less digits than its factorization.

31100021122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29174503923.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31100021122222 its reverse (22222112000113), we get a palindrome (53322133122335).

The spelling of 31100021122222 in words is "thirty-one trillion, one hundred billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".