402221132 has 12 divisors (see below), whose sum is σ = 710466120. Its totient is φ = 199230816.

The previous prime is 402221123. The next prime is 402221147. The reversal of 402221132 is 231122204.

It is a super-2 number, since 2×402221132² = 323563678054722848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402221132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469457 + ... + 470312.

It is an arithmetic number, because the mean of its divisors is an integer number (59205510).

Almost surely, 2^402221132 is an apocalyptic number.

It is an amenable number.

402221132 is a deficient number, since it is larger than the sum of its proper divisors (308244988).

402221132 is a wasteful number, since it uses less digits than its factorization.

402221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939880 (or 939878 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 402221132 is about 20055.4514284770. The cubic root of 402221132 is about 738.1675699031.

Adding to 402221132 its reverse (231122204), we get a palindrome (633343336).

The spelling of 402221132 in words is "four hundred two million, two hundred twenty-one thousand, one hundred thirty-two".