2225221111 has 2 divisors, whose sum is σ = 2225221112. Its totient is φ = 2225221110.

The previous prime is 2225221109. The next prime is 2225221129. The reversal of 2225221111 is 1111225222.

It is a happy number.

2225221111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2225221111 - 2¹ = 2225221109 is a prime.

It is a super-4 number, since 4×2225221111⁴ (a number of 38 digits) contains 4444 as substring.

Together with 2225221109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2225227111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112610555 + 1112610556.

It is an arithmetic number, because the mean of its divisors is an integer number (1112610556).

Almost surely, 2^2225221111 is an apocalyptic number.

2225221111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2225221111 is an equidigital number, since it uses as much as digits as its factorization.

2225221111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160, while the sum is 19.

The square root of 2225221111 is about 47172.2493739699. The cubic root of 2225221111 is about 1305.5426291614.

Adding to 2225221111 its reverse (1111225222), we get a palindrome (3336446333).

The spelling of 2225221111 in words is "two billion, two hundred twenty-five million, two hundred twenty-one thousand, one hundred eleven".