402124221229 has 2 divisors, whose sum is σ = 402124221230. Its totient is φ = 402124221228.

The previous prime is 402124221197. The next prime is 402124221299. The reversal of 402124221229 is 922122421204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225148352004 + 176975869225 = 474498^2 + 420685^2 .

It is a cyclic number.

It is not a de Polignac number, because 402124221229 - 2⁵ = 402124221197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402124221229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402124221299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201062110614 + 201062110615.

It is an arithmetic number, because the mean of its divisors is an integer number (201062110615).

Almost surely, 2^402124221229 is an apocalyptic number.

It is an amenable number.

402124221229 is a deficient number, since it is larger than the sum of its proper divisors (1).

402124221229 is an equidigital number, since it uses as much as digits as its factorization.

402124221229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The spelling of 402124221229 in words is "four hundred two billion, one hundred twenty-four million, two hundred twenty-one thousand, two hundred twenty-nine".