402120222201 has 32 divisors (see below), whose sum is σ = 615605591040. Its totient is φ = 259156195200.

The previous prime is 402120222193. The next prime is 402120222241. The reversal of 402120222201 is 102222021204.

402120222201 is a `hidden beast` number, since 402 + 1 + 20 + 22 + 220 + 1 = 666.

It is not a de Polignac number, because 402120222201 - 2³ = 402120222193 is a prime.

It is a super-2 number, since 2×402120222201² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402120222241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 532341 + ... + 1042893.

It is an arithmetic number, because the mean of its divisors is an integer number (19237674720).

Almost surely, 2^402120222201 is an apocalyptic number.

It is an amenable number.

402120222201 is a deficient number, since it is larger than the sum of its proper divisors (213485368839).

402120222201 is a wasteful number, since it uses less digits than its factorization.

402120222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511534 (or 511528 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 402120222201 its reverse (102222021204), we get a palindrome (504342243405).

The spelling of 402120222201 in words is "four hundred two billion, one hundred twenty million, two hundred twenty-two thousand, two hundred one".