212202221001 has 4 divisors (see below), whose sum is σ = 282936294672. Its totient is φ = 141468147332.

The previous prime is 212202220991. The next prime is 212202221027. The reversal of 212202221001 is 100122202212.

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 212202221001 - 2²⁵ = 212168666569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212202221051) 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, 35367036831 + ... + 35367036836.

It is an arithmetic number, because the mean of its divisors is an integer number (70734073668).

Almost surely, 2^212202221001 is an apocalyptic number.

It is an amenable number.

212202221001 is a deficient number, since it is larger than the sum of its proper divisors (70734073671).

212202221001 is an equidigital number, since it uses as much as digits as its factorization.

212202221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70734073670.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212202221001 its reverse (100122202212), we get a palindrome (312324423213).

The spelling of 212202221001 in words is "two hundred twelve billion, two hundred two million, two hundred twenty-one thousand, one".