11145513121 has 16 divisors (see below), whose sum is σ = 11686929408. Its totient is φ = 10608958800.

The previous prime is 11145513101. The next prime is 11145513139. The reversal of 11145513121 is 12131554111.

It is a cyclic number.

It is not a de Polignac number, because 11145513121 - 2¹⁷ = 11145382049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11145513101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7279126 + ... + 7280656.

It is an arithmetic number, because the mean of its divisors is an integer number (730433088).

Almost surely, 2^11145513121 is an apocalyptic number.

It is an amenable number.

11145513121 is a deficient number, since it is larger than the sum of its proper divisors (541416287).

11145513121 is a wasteful number, since it uses less digits than its factorization.

11145513121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892.

The product of its digits is 600, while the sum is 25.

The spelling of 11145513121 in words is "eleven billion, one hundred forty-five million, five hundred thirteen thousand, one hundred twenty-one".