121122012013 has 4 divisors (see below), whose sum is σ = 121138106940. Its totient is φ = 121105917088.

The previous prime is 121122011957. The next prime is 121122012019. The reversal of 121122012013 is 310210221121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65914400644 + 55207611369 = 256738^2 + 234963^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122012013 - 2³³ = 112532077421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122012019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8036170 + ... + 8051227.

It is an arithmetic number, because the mean of its divisors is an integer number (30284526735).

Almost surely, 2^121122012013 is an apocalyptic number.

It is an amenable number.

121122012013 is a deficient number, since it is larger than the sum of its proper divisors (16094927).

121122012013 is an equidigital number, since it uses as much as digits as its factorization.

121122012013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16094926.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121122012013 its reverse (310210221121), we get a palindrome (431332233134).

The spelling of 121122012013 in words is "one hundred twenty-one billion, one hundred twenty-two million, twelve thousand, thirteen".