1100111513213 has 4 divisors (see below), whose sum is σ = 1100122020060. Its totient is φ = 1100101006368.

The previous prime is 1100111513161. The next prime is 1100111513261. The reversal of 1100111513213 is 3123151110011.

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 1018924698724 + 81186814489 = 1009418^2 + 284933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100111513213 - 2²⁸ = 1099843077757 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 (1100111513273) 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, 5094770 + ... + 5306307.

It is an arithmetic number, because the mean of its divisors is an integer number (275030505015).

Almost surely, 2^{1100111513213} is an apocalyptic number.

It is an amenable number.

1100111513213 is a deficient number, since it is larger than the sum of its proper divisors (10506847).

1100111513213 is a wasteful number, since it uses less digits than its factorization.

1100111513213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10506846.

The product of its (nonzero) digits is 90, while the sum is 20.

Adding to 1100111513213 its reverse (3123151110011), we get a palindrome (4223262623224).

The spelling of 1100111513213 in words is "one trillion, one hundred billion, one hundred eleven million, five hundred thirteen thousand, two hundred thirteen".