212400422001 has 48 divisors (see below), whose sum is σ = 324301536000. Its totient is φ = 133586599680.

The previous prime is 212400421993. The next prime is 212400422029. The reversal of 212400422001 is 100224004212.

212400422001 is a `hidden beast` number, since 2 + 1 + 240 + 0 + 422 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 212400422001 - 2³ = 212400421993 is a prime.

It is a super-2 number, since 2×212400422001² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212400424001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47824941 + ... + 47829381.

It is an arithmetic number, because the mean of its divisors is an integer number (6756282000).

Almost surely, 2^212400422001 is an apocalyptic number.

It is an amenable number.

212400422001 is a deficient number, since it is larger than the sum of its proper divisors (111901113999).

212400422001 is a wasteful number, since it uses less digits than its factorization.

212400422001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574 (or 5571 counting only the distinct ones).

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

Adding to 212400422001 its reverse (100224004212), we get a palindrome (312624426213).

The spelling of 212400422001 in words is "two hundred twelve billion, four hundred million, four hundred twenty-two thousand, one".