402444222220 has 12 divisors (see below), whose sum is σ = 845132866704. Its totient is φ = 160977688880.

The previous prime is 402444222211. The next prime is 402444222221. The reversal of 402444222220 is 22222444204.

It is a super-2 number, since 2×402444222220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402444222221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10061105536 + ... + 10061105575.

It is an arithmetic number, because the mean of its divisors is an integer number (70427738892).

Almost surely, 2^402444222220 is an apocalyptic number.

It is an amenable number.

402444222220 is an abundant number, since it is smaller than the sum of its proper divisors (442688644484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402444222220 is a wasteful number, since it uses less digits than its factorization.

402444222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20122211120 (or 20122211118 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 402444222220 its reverse (22222444204), we get a palindrome (424666666424).

The spelling of 402444222220 in words is "four hundred two billion, four hundred forty-four million, two hundred twenty-two thousand, two hundred twenty".