402201212 has 18 divisors (see below), whose sum is σ = 818767152. Its totient is φ = 172371864.

The previous prime is 402201209. The next prime is 402201221. The reversal of 402201212 is 212102204.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1025828 + ... + 1026219.

It is an arithmetic number, because the mean of its divisors is an integer number (45487064).

Almost surely, 2^402201212 is an apocalyptic number.

It is an amenable number.

402201212 is an abundant number, since it is smaller than the sum of its proper divisors (416565940).

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

402201212 is a wasteful number, since it uses less digits than its factorization.

402201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052065 (or 2052056 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 402201212 is about 20054.9547992510. The cubic root of 402201212 is about 738.1553837866.

Adding to 402201212 its reverse (212102204), we get a palindrome (614303416).

The spelling of 402201212 in words is "four hundred two million, two hundred one thousand, two hundred twelve".