222221000122001 has 4 divisors (see below), whose sum is σ = 222221074971504. Its totient is φ = 222220925272500.

The previous prime is 222221000121961. The next prime is 222221000122021. The reversal of 222221000122001 is 100221000122222.

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 not a de Polignac number, because 222221000122001 - 2²⁶ = 222220933013137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221000122021) 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, 32779175 + ... + 38973276.

It is an arithmetic number, because the mean of its divisors is an integer number (55555268742876).

Almost surely, 2^{222221000122001} is an apocalyptic number.

It is an amenable number.

222221000122001 is a deficient number, since it is larger than the sum of its proper divisors (74849503).

222221000122001 is an equidigital number, since it uses as much as digits as its factorization.

222221000122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74849502.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222221000122001 its reverse (100221000122222), we get a palindrome (322442000244223).

The spelling of 222221000122001 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty-two thousand, one".