222122222001 has 8 divisors (see below), whose sum is σ = 329069958560. Its totient is φ = 148081481316.

The previous prime is 222122221991. The next prime is 222122222009. The reversal of 222122222001 is 100222221222.

222122222001 is a `hidden beast` number, since 2 + 221 + 222 + 220 + 0 + 1 = 666.

It is not a de Polignac number, because 222122222001 - 2⁷ = 222122221873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222122222009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4113374455 + ... + 4113374508.

It is an arithmetic number, because the mean of its divisors is an integer number (41133744820).

Almost surely, 2^222122222001 is an apocalyptic number.

It is an amenable number.

222122222001 is a deficient number, since it is larger than the sum of its proper divisors (106947736559).

222122222001 is an equidigital number, since it uses as much as digits as its factorization.

222122222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8226748972 (or 8226748966 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222122222001 its reverse (100222221222), we get a palindrome (322344443223).

The spelling of 222122222001 in words is "two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-two thousand, one".