21321131301131 has 8 divisors (see below), whose sum is σ = 22093135764480. Its totient is φ = 20561679756072.

The previous prime is 21321131300999. The next prime is 21321131301143. The reversal of 21321131301131 is 13110313112312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21321131301131 is a prime.

It is a super-2 number, since 2×21321131301131² (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 = 21321131301097 and 21321131301106.

It is not an unprimeable number, because it can be changed into a prime (21321131304131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138226115 + ... + 3138232908.

It is an arithmetic number, because the mean of its divisors is an integer number (2761641970560).

Almost surely, 2^{21321131301131} is an apocalyptic number.

21321131301131 is a deficient number, since it is larger than the sum of its proper divisors (772004463349).

21321131301131 is an equidigital number, since it uses as much as digits as its factorization.

21321131301131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276459145.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 21321131301131 its reverse (13110313112312), we get a palindrome (34431444413443).

The spelling of 21321131301131 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty-one million, three hundred one thousand, one hundred thirty-one".