21302210012131 has 4 divisors (see below), whose sum is σ = 21302220892752. Its totient is φ = 21302199131512.

The previous prime is 21302210012089. The next prime is 21302210012177. The reversal of 21302210012131 is 13121001220312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21302210012131 - 2⁷ = 21302210012003 is a prime.

It is a super-2 number, since 2×21302210012131² (a number of 27 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 = 21302210012099 and 21302210012108.

It is not an unprimeable number, because it can be changed into a prime (21302210012431) 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, 1599940 + ... + 6720433.

It is an arithmetic number, because the mean of its divisors is an integer number (5325555223188).

Almost surely, 2^{21302210012131} is an apocalyptic number.

21302210012131 is a deficient number, since it is larger than the sum of its proper divisors (10880621).

21302210012131 is an equidigital number, since it uses as much as digits as its factorization.

21302210012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10880620.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21302210012131 its reverse (13121001220312), we get a palindrome (34423211232443).

The spelling of 21302210012131 in words is "twenty-one trillion, three hundred two billion, two hundred ten million, twelve thousand, one hundred thirty-one".