121313222131010 has 96 divisors (see below), whose sum is σ = 278039153698992. Its totient is φ = 37764231160320.

The previous prime is 121313222130979. The next prime is 121313222131021. The reversal of 121313222131010 is 10131222313121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5316164873761 + 115997057257249 = 2305681^2 + 10770193^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155713577 + ... + 156490716.

Almost surely, 2^{121313222131010} is an apocalyptic number.

121313222131010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121313222131010 is an abundant number, since it is smaller than the sum of its proper divisors (156725931567982).

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

121313222131010 is a wasteful number, since it uses less digits than its factorization.

121313222131010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312204388 (or 312204381 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121313222131010 its reverse (10131222313121), we get a palindrome (131444444444131).

The spelling of 121313222131010 in words is "one hundred twenty-one trillion, three hundred thirteen billion, two hundred twenty-two million, one hundred thirty-one thousand, ten".