402212433020309 has 2 divisors, whose sum is σ = 402212433020310. Its totient is φ = 402212433020308.

The previous prime is 402212433020207. The next prime is 402212433020311. The reversal of 402212433020309 is 903020334212204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402104881817809 + 107551202500 = 20052553^2 + 327950^2 .

It is a cyclic number.

It is not a de Polignac number, because 402212433020309 - 2¹² = 402212433016213 is a prime.

It is a super-2 number, since 2×402212433020309² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 402212433020311, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402212433020009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201106216510154 + 201106216510155.

It is an arithmetic number, because the mean of its divisors is an integer number (201106216510155).

Almost surely, 2^{402212433020309} is an apocalyptic number.

It is an amenable number.

402212433020309 is a deficient number, since it is larger than the sum of its proper divisors (1).

402212433020309 is an equidigital number, since it uses as much as digits as its factorization.

402212433020309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 402212433020309 in words is "four hundred two trillion, two hundred twelve billion, four hundred thirty-three million, twenty thousand, three hundred nine".