13212120131 has 8 divisors (see below), whose sum is σ = 15306409824. Its totient is φ = 11169541440.

The previous prime is 13212120127. The next prime is 13212120137. The reversal of 13212120131 is 13102121231.

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

It is a cyclic number.

It is not a de Polignac number, because 13212120131 - 2² = 13212120127 is a prime.

It is a super-2 number, since 2×13212120131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212120137) 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, 12927200 + ... + 12928221.

It is an arithmetic number, because the mean of its divisors is an integer number (1913301228).

Almost surely, 2^13212120131 is an apocalyptic number.

13212120131 is a deficient number, since it is larger than the sum of its proper divisors (2094289693).

13212120131 is an equidigital number, since it uses as much as digits as its factorization.

13212120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25855501.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13212120131 its reverse (13102121231), we get a palindrome (26314241362).

The spelling of 13212120131 in words is "thirteen billion, two hundred twelve million, one hundred twenty thousand, one hundred thirty-one".