2022211221 has 16 divisors (see below), whose sum is σ = 2835677184. Its totient is φ = 1279366704.

The previous prime is 2022211199. The next prime is 2022211223. The reversal of 2022211221 is 1221122202.

It is not a de Polignac number, because 2022211221 - 2⁶ = 2022211157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2022211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022211223) 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, 106621 + ... + 124146.

It is an arithmetic number, because the mean of its divisors is an integer number (177229824).

Almost surely, 2^2022211221 is an apocalyptic number.

It is an amenable number.

2022211221 is a deficient number, since it is larger than the sum of its proper divisors (813465963).

2022211221 is a wasteful number, since it uses less digits than its factorization.

2022211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230920.

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

The square root of 2022211221 is about 44969.0028908803. The cubic root of 2022211221 is about 1264.5679540256.

Adding to 2022211221 its reverse (1221122202), we get a palindrome (3243333423).

The spelling of 2022211221 in words is "two billion, twenty-two million, two hundred eleven thousand, two hundred twenty-one".