31212101212122 has 16 divisors (see below), whose sum is σ = 62424413265312. Its totient is φ = 10403998597200.

The previous prime is 31212101212081. The next prime is 31212101212133. The reversal of 31212101212122 is 22121210121213.

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, 6827004 + ... + 10441847.

It is an arithmetic number, because the mean of its divisors is an integer number (3901525829082).

Almost surely, 2^{31212101212122} is an apocalyptic number.

31212101212122 is an abundant number, since it is smaller than the sum of its proper divisors (31212312053190).

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

31212101212122 is a wasteful number, since it uses less digits than its factorization.

31212101212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17570093.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 31212101212122 its reverse (22121210121213), we get a palindrome (53333311333335).

The spelling of 31212101212122 in words is "thirty-one trillion, two hundred twelve billion, one hundred one million, two hundred twelve thousand, one hundred twenty-two".