212221002001 has 8 divisors (see below), whose sum is σ = 234474355584. Its totient is φ = 191053177920.

The previous prime is 212221001969. The next prime is 212221002011. The reversal of 212221002001 is 100200122212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212221002001 - 2⁵ = 212221001969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212221002011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271381965 + ... + 271382746.

It is an arithmetic number, because the mean of its divisors is an integer number (29309294448).

Almost surely, 2^212221002001 is an apocalyptic number.

It is an amenable number.

212221002001 is a deficient number, since it is larger than the sum of its proper divisors (22253353583).

212221002001 is a wasteful number, since it uses less digits than its factorization.

212221002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542764751.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212221002001 its reverse (100200122212), we get a palindrome (312421124213).

The spelling of 212221002001 in words is "two hundred twelve billion, two hundred twenty-one million, two thousand, one".