22222212001 has 16 divisors (see below), whose sum is σ = 24545851200. Its totient is φ = 19950184000.

The previous prime is 22222211981. The next prime is 22222212029. The reversal of 22222212001 is 10021222222.

It is a cyclic number.

It is not a de Polignac number, because 22222212001 - 2⁷ = 22222211873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22222212041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406470 + ... + 457888.

It is an arithmetic number, because the mean of its divisors is an integer number (1534115700).

Almost surely, 2^22222212001 is an apocalyptic number.

It is an amenable number.

22222212001 is a deficient number, since it is larger than the sum of its proper divisors (2323639199).

22222212001 is a wasteful number, since it uses less digits than its factorization.

22222212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51920.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22222212001 its reverse (10021222222), we get a palindrome (32243434223).

It can be divided in two parts, 2222221 and 2001, that added together give a palindrome (2224222).

The spelling of 22222212001 in words is "twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, one".