11400131021 has 4 divisors (see below), whose sum is σ = 11439039612. Its totient is φ = 11361222432.

The previous prime is 11400130993. The next prime is 11400131023. The reversal of 11400131021 is 12013100411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10906669225 + 493461796 = 104435^2 + 22214^2 .

It is a cyclic number.

It is not a de Polignac number, because 11400131021 - 2¹⁴ = 11400114637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11400130987 and 11400131005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11400131023) 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, 19453856 + ... + 19454441.

It is an arithmetic number, because the mean of its divisors is an integer number (2859759903).

Almost surely, 2^11400131021 is an apocalyptic number.

It is an amenable number.

11400131021 is a deficient number, since it is larger than the sum of its proper divisors (38908591).

11400131021 is an equidigital number, since it uses as much as digits as its factorization.

11400131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38908590.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11400131021 its reverse (12013100411), we get a palindrome (23413231432).

The spelling of 11400131021 in words is "eleven billion, four hundred million, one hundred thirty-one thousand, twenty-one".