11051513121 has 32 divisors (see below), whose sum is σ = 16208409600. Its totient is φ = 6642417600.

The previous prime is 11051513117. The next prime is 11051513129. The reversal of 11051513121 is 12131515011.

It is not a de Polignac number, because 11051513121 - 2² = 11051513117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11051513129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4045326 + ... + 4048056.

It is an arithmetic number, because the mean of its divisors is an integer number (506512800).

Almost surely, 2^11051513121 is an apocalyptic number.

11051513121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11051513121 is a deficient number, since it is larger than the sum of its proper divisors (5156896479).

11051513121 is a wasteful number, since it uses less digits than its factorization.

11051513121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717.

The product of its (nonzero) digits is 150, while the sum is 21.

The spelling of 11051513121 in words is "eleven billion, fifty-one million, five hundred thirteen thousand, one hundred twenty-one".