321212322131 has 2 divisors, whose sum is σ = 321212322132. Its totient is φ = 321212322130.

The previous prime is 321212322127. The next prime is 321212322149. The reversal of 321212322131 is 131223212123.

It is a weak prime.

It is an emirp because it is prime and its reverse (131223212123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321212322131 - 2² = 321212322127 is a prime.

It is a super-2 number, since 2×321212322131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321212322097 and 321212322106.

It is not a weakly prime, because it can be changed into another prime (321212322161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160606161065 + 160606161066.

It is an arithmetic number, because the mean of its divisors is an integer number (160606161066).

Almost surely, 2^321212322131 is an apocalyptic number.

321212322131 is a deficient number, since it is larger than the sum of its proper divisors (1).

321212322131 is an equidigital number, since it uses as much as digits as its factorization.

321212322131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

Adding to 321212322131 its reverse (131223212123), we get a palindrome (452435534254).

The spelling of 321212322131 in words is "three hundred twenty-one billion, two hundred twelve million, three hundred twenty-two thousand, one hundred thirty-one".