321420244213429 has 2 divisors, whose sum is σ = 321420244213430. Its totient is φ = 321420244213428.

The previous prime is 321420244213399. The next prime is 321420244213603. The reversal of 321420244213429 is 924312442024123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237559027702500 + 83861216510929 = 15412950^2 + 9157577^2 .

It is a cyclic number.

It is not a de Polignac number, because 321420244213429 - 2³⁷ = 321282805259957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321420244253429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160710122106714 + 160710122106715.

It is an arithmetic number, because the mean of its divisors is an integer number (160710122106715).

Almost surely, 2^{321420244213429} is an apocalyptic number.

It is an amenable number.

321420244213429 is a deficient number, since it is larger than the sum of its proper divisors (1).

321420244213429 is an equidigital number, since it uses as much as digits as its factorization.

321420244213429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 321420244213429 in words is "three hundred twenty-one trillion, four hundred twenty billion, two hundred forty-four million, two hundred thirteen thousand, four hundred twenty-nine".