31212103200122 has 32 divisors (see below), whose sum is σ = 50536909305792. Its totient is φ = 14372078102784.

The previous prime is 31212103200107. The next prime is 31212103200151. The reversal of 31212103200122 is 22100230121213.

It is a junction number, because it is equal to n+sod(n) for n = 31212103200094 and 31212103200103.

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 15 ways as a sum of consecutive naturals, for example, 32391533 + ... + 33341199.

It is an arithmetic number, because the mean of its divisors is an integer number (1579278415806).

Almost surely, 2^{31212103200122} is an apocalyptic number.

31212103200122 is a deficient number, since it is larger than the sum of its proper divisors (19324806105670).

31212103200122 is a wasteful number, since it uses less digits than its factorization.

31212103200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952622.

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

Adding to 31212103200122 its reverse (22100230121213), we get a palindrome (53312333321335).

The spelling of 31212103200122 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, two hundred thousand, one hundred twenty-two".