11240621123 has 4 divisors (see below), whose sum is σ = 11452708368. Its totient is φ = 11028533880.

The previous prime is 11240621113. The next prime is 11240621137. The reversal of 11240621123 is 32112604211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11240621123 - 2²² = 11236426819 is a prime.

It is a super-2 number, since 2×11240621123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11240621113) 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, 106043543 + ... + 106043648.

It is an arithmetic number, because the mean of its divisors is an integer number (2863177092).

Almost surely, 2^11240621123 is an apocalyptic number.

11240621123 is a deficient number, since it is larger than the sum of its proper divisors (212087245).

11240621123 is an equidigital number, since it uses as much as digits as its factorization.

11240621123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212087244.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 11240621123 in words is "eleven billion, two hundred forty million, six hundred twenty-one thousand, one hundred twenty-three".