210012202221 has 4 divisors (see below), whose sum is σ = 280016269632. Its totient is φ = 140008134812.

The previous prime is 210012202217. The next prime is 210012202237. The reversal of 210012202221 is 122202210012.

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 210012202221 - 2² = 210012202217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210012202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012202261) 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, 35002033701 + ... + 35002033706.

It is an arithmetic number, because the mean of its divisors is an integer number (70004067408).

Almost surely, 2^210012202221 is an apocalyptic number.

It is an amenable number.

210012202221 is a deficient number, since it is larger than the sum of its proper divisors (70004067411).

210012202221 is an equidigital number, since it uses as much as digits as its factorization.

210012202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70004067410.

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

Adding to 210012202221 its reverse (122202210012), we get a palindrome (332214412233).

It can be divided in two parts, 21001 and 2202221, that added together give a palindrome (2223222).

The spelling of 210012202221 in words is "two hundred ten billion, twelve million, two hundred two thousand, two hundred twenty-one".