11015621113 has 4 divisors (see below), whose sum is σ = 12589281280. Its totient is φ = 9441960948.

The previous prime is 11015621069. The next prime is 11015621117. The reversal of 11015621113 is 31112651011.

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 de Polignac number, because none of the positive numbers 2^k-11015621113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11015621117) 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, 786830073 + ... + 786830086.

It is an arithmetic number, because the mean of its divisors is an integer number (3147320320).

Almost surely, 2^11015621113 is an apocalyptic number.

It is an amenable number.

11015621113 is a deficient number, since it is larger than the sum of its proper divisors (1573660167).

11015621113 is an equidigital number, since it uses as much as digits as its factorization.

11015621113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573660166.

The product of its (nonzero) digits is 180, while the sum is 22.

The spelling of 11015621113 in words is "eleven billion, fifteen million, six hundred twenty-one thousand, one hundred thirteen".