2110022221 has 2 divisors, whose sum is σ = 2110022222. Its totient is φ = 2110022220.

The previous prime is 2110022203. The next prime is 2110022287. The reversal of 2110022221 is 1222200112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1988714025 + 121308196 = 44595^2 + 11014^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110022221 - 2¹⁷ = 2109891149 is a prime.

It is a super-2 number, since 2×2110022221² = 8904387546227545682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110022021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055011110 + 1055011111.

It is an arithmetic number, because the mean of its divisors is an integer number (1055011111).

Almost surely, 2^2110022221 is an apocalyptic number.

It is an amenable number.

2110022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110022221 is an equidigital number, since it uses as much as digits as its factorization.

2110022221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2110022221 is about 45934.9781865628. The cubic root of 2110022221 is about 1282.6131148719.

Adding to 2110022221 its reverse (1222200112), we get a palindrome (3332222333).

The spelling of 2110022221 in words is "two billion, one hundred ten million, twenty-two thousand, two hundred twenty-one".