2220455231 has 2 divisors, whose sum is σ = 2220455232. Its totient is φ = 2220455230.

The previous prime is 2220455189. The next prime is 2220455233. The reversal of 2220455231 is 1325540222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2220455231 - 2²² = 2216260927 is a prime.

It is a super-2 number, since 2×2220455231² = 9860842865750526722, which contains 22 as substring.

Together with 2220455233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220455231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220455233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110227615 + 1110227616.

It is an arithmetic number, because the mean of its divisors is an integer number (1110227616).

Almost surely, 2^2220455231 is an apocalyptic number.

2220455231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220455231 is an equidigital number, since it uses as much as digits as its factorization.

2220455231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2220455231 is about 47121.7065798768. The cubic root of 2220455231 is about 1304.6099118370.

Adding to 2220455231 its reverse (1325540222), we get a palindrome (3545995453).

The spelling of 2220455231 in words is "two billion, two hundred twenty million, four hundred fifty-five thousand, two hundred thirty-one".