2211202221 has 8 divisors (see below), whose sum is σ = 3076455360. Its totient is φ = 1410041952.

The previous prime is 2211202183. The next prime is 2211202271. The reversal of 2211202221 is 1222021122.

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

It is not a de Polignac number, because 2211202221 - 2⁶ = 2211202157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211202271) 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, 16023136 + ... + 16023273.

It is an arithmetic number, because the mean of its divisors is an integer number (384556920).

Almost surely, 2^2211202221 is an apocalyptic number.

It is an amenable number.

2211202221 is a deficient number, since it is larger than the sum of its proper divisors (865253139).

2211202221 is a wasteful number, since it uses less digits than its factorization.

2211202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32046435.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2211202221 is about 47023.4220468906. The cubic root of 2211202221 is about 1302.7952125501.

Adding to 2211202221 its reverse (1222021122), we get a palindrome (3433223343).

The spelling of 2211202221 in words is "two billion, two hundred eleven million, two hundred two thousand, two hundred twenty-one".