121322031213 has 16 divisors (see below), whose sum is σ = 165574181376. Its totient is φ = 78996911280.

The previous prime is 121322031191. The next prime is 121322031217. The reversal of 121322031213 is 312130223121.

It is not a de Polignac number, because 121322031213 - 2⁹ = 121322030701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121322031213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121322031217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2638831 + ... + 2684412.

It is an arithmetic number, because the mean of its divisors is an integer number (10348386336).

Almost surely, 2^121322031213 is an apocalyptic number.

It is an amenable number.

121322031213 is a deficient number, since it is larger than the sum of its proper divisors (44252150163).

121322031213 is a wasteful number, since it uses less digits than its factorization.

121322031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5323424.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121322031213 its reverse (312130223121), we get a palindrome (433452254334).

The spelling of 121322031213 in words is "one hundred twenty-one billion, three hundred twenty-two million, thirty-one thousand, two hundred thirteen".