222221120210001 has 24 divisors (see below), whose sum is σ = 356773530911616. Its totient is φ = 132138344775840.

The previous prime is 222221120209973. The next prime is 222221120210053. The reversal of 222221120210001 is 100012021122222.

It is a happy number.

222221120210001 is a `hidden beast` number, since 2 + 222 + 211 + 20 + 210 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 222221120210001 - 2⁵ = 222221120209969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222221120210101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21176011545 + ... + 21176022038.

It is an arithmetic number, because the mean of its divisors is an integer number (14865563787984).

Almost surely, 2^{222221120210001} is an apocalyptic number.

It is an amenable number.

222221120210001 is a deficient number, since it is larger than the sum of its proper divisors (134552410701615).

222221120210001 is a wasteful number, since it uses less digits than its factorization.

222221120210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42352033653 (or 42352033650 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222221120210001 its reverse (100012021122222), we get a palindrome (322233141332223).

The spelling of 222221120210001 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty million, two hundred ten thousand, one".