222001320021 has 16 divisors (see below), whose sum is σ = 319796131200. Its totient is φ = 136176909120.

The previous prime is 222001320007. The next prime is 222001320041. The reversal of 222001320021 is 120023100222.

It is a happy number.

It is not a de Polignac number, because 222001320021 - 2⁷ = 222001319893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001320041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9139546 + ... + 9163803.

It is an arithmetic number, because the mean of its divisors is an integer number (19987258200).

Almost surely, 2^222001320021 is an apocalyptic number.

It is an amenable number.

222001320021 is a deficient number, since it is larger than the sum of its proper divisors (97794811179).

222001320021 is a wasteful number, since it uses less digits than its factorization.

222001320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18303676.

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

Adding to 222001320021 its reverse (120023100222), we get a palindrome (342024420243).

The spelling of 222001320021 in words is "two hundred twenty-two billion, one million, three hundred twenty thousand, twenty-one".