212122102001 has 4 divisors (see below), whose sum is σ = 221344802112. Its totient is φ = 202899401892.

The previous prime is 212122101991. The next prime is 212122102013. The reversal of 212122102001 is 100201221212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212122102001 - 2⁶ = 212122101937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122102051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4611350021 + ... + 4611350066.

It is an arithmetic number, because the mean of its divisors is an integer number (55336200528).

Almost surely, 2^212122102001 is an apocalyptic number.

It is an amenable number.

212122102001 is a deficient number, since it is larger than the sum of its proper divisors (9222700111).

212122102001 is an equidigital number, since it uses as much as digits as its factorization.

212122102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222700110.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212122102001 its reverse (100201221212), we get a palindrome (312323323213).

The spelling of 212122102001 in words is "two hundred twelve billion, one hundred twenty-two million, one hundred two thousand, one".