21301213133131 has 4 divisors (see below), whose sum is σ = 22554225670392. Its totient is φ = 20048200595872.

The previous prime is 21301213133119. The next prime is 21301213133203. The reversal of 21301213133131 is 13133131210312.

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

It is a cyclic number.

It is not a de Polignac number, because 21301213133131 - 2⁷ = 21301213133003 is a prime.

It is a super-2 number, since 2×21301213133131² (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 = 21301213133096 and 21301213133105.

It is not an unprimeable number, because it can be changed into a prime (21301213133111) 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, 626506268605 + ... + 626506268638.

It is an arithmetic number, because the mean of its divisors is an integer number (5638556417598).

Almost surely, 2^{21301213133131} is an apocalyptic number.

21301213133131 is a deficient number, since it is larger than the sum of its proper divisors (1253012537261).

21301213133131 is a wasteful number, since it uses less digits than its factorization.

21301213133131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253012537260.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 21301213133131 its reverse (13133131210312), we get a palindrome (34434344343443).

The spelling of 21301213133131 in words is "twenty-one trillion, three hundred one billion, two hundred thirteen million, one hundred thirty-three thousand, one hundred thirty-one".