31212102122106 has 32 divisors (see below), whose sum is σ = 63980385247296. Its totient is φ = 10144937520000.

The previous prime is 31212102122099. The next prime is 31212102122129. The reversal of 31212102122106 is 60122120121213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32903860 + ... + 33839151.

It is an arithmetic number, because the mean of its divisors is an integer number (1999387038978).

Almost surely, 2^{31212102122106} is an apocalyptic number.

31212102122106 is an abundant number, since it is smaller than the sum of its proper divisors (32768283125190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31212102122106 is a wasteful number, since it uses less digits than its factorization.

31212102122106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66744958.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 31212102122106 its reverse (60122120121213), we get a palindrome (91334222243319).

The spelling of 31212102122106 in words is "thirty-one trillion, two hundred twelve billion, one hundred two million, one hundred twenty-two thousand, one hundred six".