31221133130219 has 2 divisors, whose sum is σ = 31221133130220. Its totient is φ = 31221133130218.

The previous prime is 31221133130189. The next prime is 31221133130227. The reversal of 31221133130219 is 91203133112213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31221133130219 - 2³⁶ = 31152413653483 is a prime.

It is a super-2 number, since 2×31221133130219² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31221133133219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15610566565109 + 15610566565110.

It is an arithmetic number, because the mean of its divisors is an integer number (15610566565110).

Almost surely, 2^{31221133130219} is an apocalyptic number.

31221133130219 is a deficient number, since it is larger than the sum of its proper divisors (1).

31221133130219 is an equidigital number, since it uses as much as digits as its factorization.

31221133130219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 31221133130219 in words is "thirty-one trillion, two hundred twenty-one billion, one hundred thirty-three million, one hundred thirty thousand, two hundred nineteen".