11534969121 has 16 divisors (see below), whose sum is σ = 16581882240. Its totient is φ = 7090364160.

The previous prime is 11534969119. The next prime is 11534969129. The reversal of 11534969121 is 12196943511.

It is not a de Polignac number, because 11534969121 - 2¹ = 11534969119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11534969129) 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, 133501 + ... + 202218.

It is an arithmetic number, because the mean of its divisors is an integer number (1036367640).

Almost surely, 2^11534969121 is an apocalyptic number.

It is an amenable number.

11534969121 is a deficient number, since it is larger than the sum of its proper divisors (5046913119).

11534969121 is a wasteful number, since it uses less digits than its factorization.

11534969121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336616.

The product of its digits is 58320, while the sum is 42.

The spelling of 11534969121 in words is "eleven billion, five hundred thirty-four million, nine hundred sixty-nine thousand, one hundred twenty-one".