2222202221 has 8 divisors (see below), whose sum is σ = 2241779904. Its totient is φ = 2202688800.

The previous prime is 2222202211. The next prime is 2222202223. The reversal of 2222202221 is 1222022222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2222202221 - 2²⁶ = 2155093357 is a prime.

It is a super-2 number, since 2×2222202221² = 9876365422034665682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2222202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222202223) 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, 54761 + ... + 86273.

It is an arithmetic number, because the mean of its divisors is an integer number (280222488).

Almost surely, 2^2222202221 is an apocalyptic number.

It is an amenable number.

2222202221 is a deficient number, since it is larger than the sum of its proper divisors (19577683).

2222202221 is a wasteful number, since it uses less digits than its factorization.

2222202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32131.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2222202221 is about 47140.2399336278. The cubic root of 2222202221 is about 1304.9519652710.

Adding to 2222202221 its reverse (1222022222), we get a palindrome (3444224443).

The spelling of 2222202221 in words is "two billion, two hundred twenty-two million, two hundred two thousand, two hundred twenty-one".