121310031031213 has 16 divisors (see below), whose sum is σ = 127767954657600. Its totient is φ = 114859441687680.

The previous prime is 121310031031207. The next prime is 121310031031223. The reversal of 121310031031213 is 312130130013121.

It is a cyclic number.

It is not a de Polignac number, because 121310031031213 - 2⁹ = 121310031030701 is a prime.

It is a super-2 number, since 2×121310031031213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121310031031223) 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, 282224103 + ... + 282653611.

It is an arithmetic number, because the mean of its divisors is an integer number (7985497166100).

Almost surely, 2^{121310031031213} is an apocalyptic number.

It is an amenable number.

121310031031213 is a deficient number, since it is larger than the sum of its proper divisors (6457923626387).

121310031031213 is a wasteful number, since it uses less digits than its factorization.

121310031031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438012.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 121310031031213 its reverse (312130130013121), we get a palindrome (433440161044334).

The spelling of 121310031031213 in words is "one hundred twenty-one trillion, three hundred ten billion, thirty-one million, thirty-one thousand, two hundred thirteen".