222121320001 has 32 divisors (see below), whose sum is σ = 262972661760. Its totient is φ = 183594902400.

The previous prime is 222121319989. The next prime is 222121320053. The reversal of 222121320001 is 100023121222.

It is a happy number.

It is not a de Polignac number, because 222121320001 - 2⁹ = 222121319489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121320101) 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, 90328710 + ... + 90331168.

It is an arithmetic number, because the mean of its divisors is an integer number (8217895680).

Almost surely, 2^222121320001 is an apocalyptic number.

It is an amenable number.

222121320001 is a deficient number, since it is larger than the sum of its proper divisors (40851341759).

222121320001 is a wasteful number, since it uses less digits than its factorization.

222121320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 222121320001 its reverse (100023121222), we get a palindrome (322144441223).

The spelling of 222121320001 in words is "two hundred twenty-two billion, one hundred twenty-one million, three hundred twenty thousand, one".