21113303032131 has 4 divisors (see below), whose sum is σ = 28151070709512. Its totient is φ = 14075535354752.

The previous prime is 21113303032121. The next prime is 21113303032141. The reversal of 21113303032131 is 13123030331112.

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

It is an interprime number because it is at equal distance from previous prime (21113303032121) and next prime (21113303032141).

It is a cyclic number.

It is not a de Polignac number, because 21113303032131 - 2¹⁵ = 21113302999363 is a prime.

It is a super-2 number, since 2×21113303032131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21113303032121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3518883838686 + ... + 3518883838691.

It is an arithmetic number, because the mean of its divisors is an integer number (7037767677378).

Almost surely, 2^{21113303032131} is an apocalyptic number.

21113303032131 is a deficient number, since it is larger than the sum of its proper divisors (7037767677381).

21113303032131 is an equidigital number, since it uses as much as digits as its factorization.

21113303032131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037767677380.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21113303032131 its reverse (13123030331112), we get a palindrome (34236333363243).

The spelling of 21113303032131 in words is "twenty-one trillion, one hundred thirteen billion, three hundred three million, thirty-two thousand, one hundred thirty-one".