31212103110122 has 16 divisors (see below), whose sum is σ = 51359682117600. Its totient is φ = 14108060825040.

The previous prime is 31212103110113. The next prime is 31212103110169. The reversal of 31212103110122 is 22101130121213.

It is a junction number, because it is equal to n+sod(n) for n = 31212103110094 and 31212103110103.

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, 3962934497 + ... + 3962942372.

It is an arithmetic number, because the mean of its divisors is an integer number (3209980132350).

Almost surely, 2^{31212103110122} is an apocalyptic number.

31212103110122 is a deficient number, since it is larger than the sum of its proper divisors (20147579007478).

31212103110122 is a wasteful number, since it uses less digits than its factorization.

31212103110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7925877061.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31212103110122 its reverse (22101130121213), we get a palindrome (53313233231335).

The spelling of 31212103110122 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred ten thousand, one hundred twenty-two".