222302031221 has 4 divisors (see below), whose sum is σ = 222303320352. Its totient is φ = 222300742092.

The previous prime is 222302031199. The next prime is 222302031227. The reversal of 222302031221 is 122130203222.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-222302031221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222302031193 and 222302031202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222302031227) 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, 336971 + ... + 747096.

It is an arithmetic number, because the mean of its divisors is an integer number (55575830088).

Almost surely, 2^222302031221 is an apocalyptic number.

It is an amenable number.

222302031221 is a deficient number, since it is larger than the sum of its proper divisors (1289131).

222302031221 is a wasteful number, since it uses less digits than its factorization.

222302031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289130.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 222302031221 its reverse (122130203222), we get a palindrome (344432234443).

The spelling of 222302031221 in words is "two hundred twenty-two billion, three hundred two million, thirty-one thousand, two hundred twenty-one".