222002001321 has 32 divisors (see below), whose sum is σ = 329708206080. Its totient is φ = 132226617600.

The previous prime is 222002001259. The next prime is 222002001323. The reversal of 222002001321 is 123100200222.

It is a happy number.

It is not a de Polignac number, because 222002001321 - 2⁶ = 222002001257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222002001321.

It is not an unprimeable number, because it can be changed into a prime (222002001323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1099440 + ... + 1285601.

It is an arithmetic number, because the mean of its divisors is an integer number (10303381440).

Almost surely, 2^222002001321 is an apocalyptic number.

It is an amenable number.

222002001321 is a deficient number, since it is larger than the sum of its proper divisors (107706204759).

222002001321 is a wasteful number, since it uses less digits than its factorization.

222002001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385157.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 222002001321 its reverse (123100200222), we get a palindrome (345102201543).

The spelling of 222002001321 in words is "two hundred twenty-two billion, two million, one thousand, three hundred twenty-one".