11131124021 has 16 divisors (see below), whose sum is σ = 11396229120. Its totient is φ = 10868847360.

The previous prime is 11131123987. The next prime is 11131124029. The reversal of 11131124021 is 12042113111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131124021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131124029) 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, 6348881 + ... + 6350633.

It is an arithmetic number, because the mean of its divisors is an integer number (712264320).

Almost surely, 2^11131124021 is an apocalyptic number.

It is an amenable number.

11131124021 is a deficient number, since it is larger than the sum of its proper divisors (265105099).

11131124021 is a wasteful number, since it uses less digits than its factorization.

11131124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11131124021 its reverse (12042113111), we get a palindrome (23173237132).

The spelling of 11131124021 in words is "eleven billion, one hundred thirty-one million, one hundred twenty-four thousand, twenty-one".