213002222221 has 4 divisors (see below), whose sum is σ = 213163711200. Its totient is φ = 212840733244.

The previous prime is 213002222189. The next prime is 213002222231. The reversal of 213002222221 is 122222200312.

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 213002222221 - 2⁵ = 213002222189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213002222231) 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, 80742511 + ... + 80745148.

It is an arithmetic number, because the mean of its divisors is an integer number (53290927800).

Almost surely, 2^213002222221 is an apocalyptic number.

It is an amenable number.

213002222221 is a deficient number, since it is larger than the sum of its proper divisors (161488979).

213002222221 is a wasteful number, since it uses less digits than its factorization.

213002222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161488978.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 213002222221 its reverse (122222200312), we get a palindrome (335224422533).

The spelling of 213002222221 in words is "two hundred thirteen billion, two million, two hundred twenty-two thousand, two hundred twenty-one".