212204402001 has 12 divisors (see below), whose sum is σ = 306621306628. Its totient is φ = 141421676544.

The previous prime is 212204401979. The next prime is 212204402023. The reversal of 212204402001 is 100204402212.

212204402001 is a `hidden beast` number, since 2 + 1 + 2 + 20 + 440 + 200 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (212204401979) and next prime (212204402023).

It can be written as a sum of positive squares in 2 ways, for example, as 161218310400 + 50986091601 = 401520^2 + 225801^2 .

It is not a de Polignac number, because 212204402001 - 2⁷ = 212204401873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212204402051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3965680 + ... + 4018833.

Almost surely, 2^212204402001 is an apocalyptic number.

It is an amenable number.

212204402001 is a deficient number, since it is larger than the sum of its proper divisors (94416904627).

212204402001 is a wasteful number, since it uses less digits than its factorization.

212204402001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7987472 (or 7987469 counting only the distinct ones).

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

Adding to 212204402001 its reverse (100204402212), we get a palindrome (312408804213).

The spelling of 212204402001 in words is "two hundred twelve billion, two hundred four million, four hundred two thousand, one".