101511012013 has 4 divisors (see below), whose sum is σ = 101519159040. Its totient is φ = 101502864988.

The previous prime is 101511011947. The next prime is 101511012023. The reversal of 101511012013 is 310210115101.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 101511012013 - 2⁹ = 101511011501 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 (101511012023) 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, 4054795 + ... + 4079752.

It is an arithmetic number, because the mean of its divisors is an integer number (25379789760).

Almost surely, 2^101511012013 is an apocalyptic number.

It is an amenable number.

101511012013 is a deficient number, since it is larger than the sum of its proper divisors (8147027).

101511012013 is an equidigital number, since it uses as much as digits as its factorization.

101511012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8147026.

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 101511012013 its reverse (310210115101), we get a palindrome (411721127114).

The spelling of 101511012013 in words is "one hundred one billion, five hundred eleven million, twelve thousand, thirteen".