222222202221001 has 4 divisors (see below), whose sum is σ = 222222256414992. Its totient is φ = 222222148027012.

The previous prime is 222222202220939. The next prime is 222222202221079. The reversal of 222222202221001 is 100122202222222.

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 222222202221001 - 2⁹ = 222222202220489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222222202221101) 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, 20393455 + ... + 29331508.

It is an arithmetic number, because the mean of its divisors is an integer number (55555564103748).

Almost surely, 2^{222222202221001} is an apocalyptic number.

It is an amenable number.

222222202221001 is a deficient number, since it is larger than the sum of its proper divisors (54193991).

222222202221001 is an equidigital number, since it uses as much as digits as its factorization.

222222202221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54193990.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 222222202221001 its reverse (100122202222222), we get a palindrome (322344404443223).

The spelling of 222222202221001 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-one thousand, one".