222212222001 has 24 divisors (see below), whose sum is σ = 400174392384. Its totient is φ = 115434920160.

The previous prime is 222212221967. The next prime is 222212222017. The reversal of 222212222001 is 100222212222.

222212222001 is a `hidden beast` number, since 22 + 221 + 222 + 200 + 1 = 666.

It is not a de Polignac number, because 222212222001 - 2⁶ = 222212221937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222212222101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160325586 + ... + 160326971.

It is an arithmetic number, because the mean of its divisors is an integer number (16673933016).

Almost surely, 2^222212222001 is an apocalyptic number.

222212222001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222212222001 is a deficient number, since it is larger than the sum of its proper divisors (177962170383).

222212222001 is a wasteful number, since it uses less digits than its factorization.

222212222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320652581 (or 320652578 counting only the distinct ones).

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

Adding to 222212222001 its reverse (100222212222), we get a palindrome (322434434223).

The spelling of 222212222001 in words is "two hundred twenty-two billion, two hundred twelve million, two hundred twenty-two thousand, one".