402718222901 has 2 divisors, whose sum is σ = 402718222902. Its totient is φ = 402718222900.

The previous prime is 402718222853. The next prime is 402718222939. The reversal of 402718222901 is 109222817204.

It is an a-pointer prime, because the next prime (402718222939) can be obtained adding 402718222901 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402147490801 + 570732100 = 634151^2 + 23890^2 .

It is a cyclic number.

It is not a de Polignac number, because 402718222901 - 2²² = 402714028597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402718222601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201359111450 + 201359111451.

It is an arithmetic number, because the mean of its divisors is an integer number (201359111451).

Almost surely, 2^402718222901 is an apocalyptic number.

It is an amenable number.

402718222901 is a deficient number, since it is larger than the sum of its proper divisors (1).

402718222901 is an equidigital number, since it uses as much as digits as its factorization.

402718222901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 402718222901 in words is "four hundred two billion, seven hundred eighteen million, two hundred twenty-two thousand, nine hundred one".