31212100320122 has 8 divisors (see below), whose sum is σ = 46818190275156. Its totient is φ = 15606036895072.

The previous prime is 31212100320103. The next prime is 31212100320143. The reversal of 31212100320122 is 22102300121213.

It can be written as a sum of positive squares in 2 ways, for example, as 22350589424881 + 8861510895241 = 4727641^2 + 2976829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31212100320094 and 31212100320103.

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, 3370403 + ... + 8589750.

Almost surely, 2^{31212100320122} is an apocalyptic number.

31212100320122 is a deficient number, since it is larger than the sum of its proper divisors (15606089955034).

31212100320122 is a wasteful number, since it uses less digits than its factorization.

31212100320122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13264992.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31212100320122 its reverse (22102300121213), we get a palindrome (53314400441335).

The spelling of 31212100320122 in words is "thirty-one trillion, two hundred twelve billion, one hundred million, three hundred twenty thousand, one hundred twenty-two".