111215053013 has 4 divisors (see below), whose sum is σ = 111513217068. Its totient is φ = 110916888960.

The previous prime is 111215052989. The next prime is 111215053049. The reversal of 111215053013 is 310350512111.

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 40063224964 + 71151828049 = 200158^2 + 266743^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111215053013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111215053013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111215053063) 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, 149081468 + ... + 149082213.

It is an arithmetic number, because the mean of its divisors is an integer number (27878304267).

Almost surely, 2^111215053013 is an apocalyptic number.

It is an amenable number.

111215053013 is a deficient number, since it is larger than the sum of its proper divisors (298164055).

111215053013 is an equidigital number, since it uses as much as digits as its factorization.

111215053013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298164054.

The product of its (nonzero) digits is 450, while the sum is 23.

Adding to 111215053013 its reverse (310350512111), we get a palindrome (421565565124).

The spelling of 111215053013 in words is "one hundred eleven billion, two hundred fifteen million, fifty-three thousand, thirteen".