2222222001 has 16 divisors (see below), whose sum is σ = 3020509440. Its totient is φ = 1452738560.

The previous prime is 2222221987. The next prime is 2222222003. The reversal of 2222222001 is 1002222222.

It is a cyclic number.

It is not a de Polignac number, because 2222222001 - 2⁷ = 2222221873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2222222003) 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, 493681 + ... + 498161.

It is an arithmetic number, because the mean of its divisors is an integer number (188781840).

Almost surely, 2^2222222001 is an apocalyptic number.

It is an amenable number.

2222222001 is a deficient number, since it is larger than the sum of its proper divisors (798287439).

2222222001 is a wasteful number, since it uses less digits than its factorization.

2222222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2222222001 is about 47140.4497326871. The cubic root of 2222222001 is about 1304.9558370868.

Adding to 2222222001 its reverse (1002222222), we get a palindrome (3224444223).

The spelling of 2222222001 in words is "two billion, two hundred twenty-two million, two hundred twenty-two thousand, one".