212100102212001 has 4 divisors (see below), whose sum is σ = 282800136282672. Its totient is φ = 141400068141332.

The previous prime is 212100102211919. The next prime is 212100102212017. The reversal of 212100102212001 is 100212201001212.

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 212100102212001 - 2²⁷ = 212099967994273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212100102211001) 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, 35350017035331 + ... + 35350017035336.

It is an arithmetic number, because the mean of its divisors is an integer number (70700034070668).

Almost surely, 2^{212100102212001} is an apocalyptic number.

It is an amenable number.

212100102212001 is a deficient number, since it is larger than the sum of its proper divisors (70700034070671).

212100102212001 is an equidigital number, since it uses as much as digits as its factorization.

212100102212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70700034070670.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212100102212001 its reverse (100212201001212), we get a palindrome (312312303213213).

The spelling of 212100102212001 in words is "two hundred twelve trillion, one hundred billion, one hundred two million, two hundred twelve thousand, one".