11040124021 has 6 divisors (see below), whose sum is σ = 11651765622. Its totient is φ = 10459064520.

The previous prime is 11040123943. The next prime is 11040124027. The reversal of 11040124021 is 12042104011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10550165796 + 489958225 = 102714^2 + 22135^2 .

It is not a de Polignac number, because 11040124021 - 2⁹ = 11040123509 is a prime.

It is a super-2 number, since 2×11040124021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11040123986 and 11040124004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11040124027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15290670 + ... + 15291391.

It is an arithmetic number, because the mean of its divisors is an integer number (1941960937).

Almost surely, 2^11040124021 is an apocalyptic number.

It is an amenable number.

11040124021 is a deficient number, since it is larger than the sum of its proper divisors (611641601).

11040124021 is an equidigital number, since it uses as much as digits as its factorization.

11040124021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30582099 (or 30582080 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11040124021 its reverse (12042104011), we get a palindrome (23082228032).

The spelling of 11040124021 in words is "eleven billion, forty million, one hundred twenty-four thousand, twenty-one".