402144444222 has 32 divisors (see below), whose sum is σ = 810149558400. Its totient is φ = 133071547488.

The previous prime is 402144444187. The next prime is 402144444241. The reversal of 402144444222 is 222444441204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16049488 + ... + 16074524.

It is an arithmetic number, because the mean of its divisors is an integer number (25317173700).

Almost surely, 2^402144444222 is an apocalyptic number.

402144444222 is an abundant number, since it is smaller than the sum of its proper divisors (408005114178).

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

402144444222 is a wasteful number, since it uses less digits than its factorization.

402144444222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44440.

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 402144444222 its reverse (222444441204), we get a palindrome (624588885426).

The spelling of 402144444222 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, two hundred twenty-two".