221312130202 has 8 divisors (see below), whose sum is σ = 331989289236. Its totient is φ = 110649033792.

The previous prime is 221312130199. The next prime is 221312130209. The reversal of 221312130202 is 202031213122.

It can be written as a sum of positive squares in 2 ways, for example, as 200622472281 + 20689657921 = 447909^2 + 143839^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 221312130202.

It is not an unprimeable number, because it can be changed into a prime (221312130209) 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, 3476223 + ... + 3539314.

Almost surely, 2^221312130202 is an apocalyptic number.

221312130202 is a deficient number, since it is larger than the sum of its proper divisors (110677159034).

221312130202 is a wasteful number, since it uses less digits than its factorization.

221312130202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031312.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221312130202 its reverse (202031213122), we get a palindrome (423343343324).

The spelling of 221312130202 in words is "two hundred twenty-one billion, three hundred twelve million, one hundred thirty thousand, two hundred two".