402202324421 has 2 divisors, whose sum is σ = 402202324422. Its totient is φ = 402202324420.

The previous prime is 402202324417. The next prime is 402202324507. The reversal of 402202324421 is 124423202204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371964592321 + 30237732100 = 609889^2 + 173890^2 .

It is a cyclic number.

It is not a de Polignac number, because 402202324421 - 2² = 402202324417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402202324621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201101162210 + 201101162211.

It is an arithmetic number, because the mean of its divisors is an integer number (201101162211).

Almost surely, 2^402202324421 is an apocalyptic number.

It is an amenable number.

402202324421 is a deficient number, since it is larger than the sum of its proper divisors (1).

402202324421 is an equidigital number, since it uses as much as digits as its factorization.

402202324421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 402202324421 its reverse (124423202204), we get a palindrome (526625526625).

The spelling of 402202324421 in words is "four hundred two billion, two hundred two million, three hundred twenty-four thousand, four hundred twenty-one".