121110031013 has 4 divisors (see below), whose sum is σ = 121134950508. Its totient is φ = 121085111520.

The previous prime is 121110030991. The next prime is 121110031019. The reversal of 121110031013 is 310130011121.

It is a happy number.

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 92901820804 + 28208210209 = 304798^2 + 167953^2 .

It is a cyclic number.

It is not a de Polignac number, because 121110031013 - 2¹⁸ = 121109768869 is a prime.

It is a super-2 number, since 2×121110031013² (a number of 23 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 (121110031019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12452456 + ... + 12462177.

It is an arithmetic number, because the mean of its divisors is an integer number (30283737627).

Almost surely, 2^121110031013 is an apocalyptic number.

It is an amenable number.

121110031013 is a deficient number, since it is larger than the sum of its proper divisors (24919495).

121110031013 is an equidigital number, since it uses as much as digits as its factorization.

121110031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24919494.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 121110031013 its reverse (310130011121), we get a palindrome (431240042134).

The spelling of 121110031013 in words is "one hundred twenty-one billion, one hundred ten million, thirty-one thousand, thirteen".