121112013 has 16 divisors (see below), whose sum is σ = 178647552. Its totient is φ = 72366000.

The previous prime is 121112011. The next prime is 121112027. The reversal of 121112013 is 310211121.

It is not a de Polignac number, because 121112013 - 2¹ = 121112011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121112013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23503 + ... + 28188.

It is an arithmetic number, because the mean of its divisors is an integer number (11165472).

Almost surely, 2^121112013 is an apocalyptic number.

It is an amenable number.

121112013 is a deficient number, since it is larger than the sum of its proper divisors (57535539).

121112013 is a wasteful number, since it uses less digits than its factorization.

121112013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51776.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 121112013 is about 11005.0903222100. The cubic root of 121112013 is about 494.7613215209.

Adding to 121112013 its reverse (310211121), we get a palindrome (431323134).

The spelling of 121112013 in words is "one hundred twenty-one million, one hundred twelve thousand, thirteen".