402222402221 has 4 divisors (see below), whose sum is σ = 402266136000. Its totient is φ = 402178668444.

The previous prime is 402222402187. The next prime is 402222402311. The reversal of 402222402221 is 122204222204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402222402221 - 2⁶ = 402222402157 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 (402222402521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21853091 + ... + 21871488.

It is an arithmetic number, because the mean of its divisors is an integer number (100566534000).

Almost surely, 2^402222402221 is an apocalyptic number.

It is an amenable number.

402222402221 is a deficient number, since it is larger than the sum of its proper divisors (43733779).

402222402221 is an equidigital number, since it uses as much as digits as its factorization.

402222402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43733778.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 402222402221 its reverse (122204222204), we get a palindrome (524426624425).

The spelling of 402222402221 in words is "four hundred two billion, two hundred twenty-two million, four hundred two thousand, two hundred twenty-one".