121116013 has 4 divisors (see below), whose sum is σ = 127490560. Its totient is φ = 114741468.

The previous prime is 121115987. The next prime is 121116029. The reversal of 121116013 is 310611121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310611121 = 41 ⋅7575881.

It is a cyclic number.

It is not a de Polignac number, because 121116013 - 2²⁵ = 87561581 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 (121119013) 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, 3187245 + ... + 3187282.

It is an arithmetic number, because the mean of its divisors is an integer number (31872640).

Almost surely, 2^121116013 is an apocalyptic number.

It is an amenable number.

121116013 is a deficient number, since it is larger than the sum of its proper divisors (6374547).

121116013 is an equidigital number, since it uses as much as digits as its factorization.

121116013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374546.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 121116013 is about 11005.2720547926. The cubic root of 121116013 is about 494.7667683340.

Adding to 121116013 its reverse (310611121), we get a palindrome (431727134).

The spelling of 121116013 in words is "one hundred twenty-one million, one hundred sixteen thousand, thirteen".