402253245221 has 8 divisors (see below), whose sum is σ = 405837435360. Its totient is φ = 398678916528.

The previous prime is 402253245187. The next prime is 402253245253. The reversal of 402253245221 is 122542352204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402253245221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402256245221) 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 in 7 ways as a sum of consecutive naturals, for example, 2383406 + ... + 2546591.

It is an arithmetic number, because the mean of its divisors is an integer number (50729679420).

Almost surely, 2^402253245221 is an apocalyptic number.

It is an amenable number.

402253245221 is a deficient number, since it is larger than the sum of its proper divisors (3584190139).

402253245221 is a wasteful number, since it uses less digits than its factorization.

402253245221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930723.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 402253245221 its reverse (122542352204), we get a palindrome (524795597425).

The spelling of 402253245221 in words is "four hundred two billion, two hundred fifty-three million, two hundred forty-five thousand, two hundred twenty-one".