11235540121 has 8 divisors (see below), whose sum is σ = 12101458824. Its totient is φ = 10369856640.

The previous prime is 11235540079. The next prime is 11235540137. The reversal of 11235540121 is 12104553211.

It can be written as a sum of positive squares in 4 ways, for example, as 458816400 + 10776723721 = 21420^2 + 103811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11235540121 - 2²⁹ = 10698669209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11235540721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47541 + ... + 157261.

It is an arithmetic number, because the mean of its divisors is an integer number (1512682353).

Almost surely, 2^11235540121 is an apocalyptic number.

It is an amenable number.

11235540121 is a deficient number, since it is larger than the sum of its proper divisors (865918703).

11235540121 is a wasteful number, since it uses less digits than its factorization.

11235540121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117611.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 11235540121 in words is "eleven billion, two hundred thirty-five million, five hundred forty thousand, one hundred twenty-one".