2221255123 has 2 divisors, whose sum is σ = 2221255124. Its totient is φ = 2221255122.

The previous prime is 2221255103. The next prime is 2221255177. The reversal of 2221255123 is 3215521222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221255123 - 2¹⁷ = 2221124051 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221255103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110627561 + 1110627562.

It is an arithmetic number, because the mean of its divisors is an integer number (1110627562).

Almost surely, 2^2221255123 is an apocalyptic number.

2221255123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221255123 is an equidigital number, since it uses as much as digits as its factorization.

2221255123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 2221255123 is about 47130.1933265714. The cubic root of 2221255123 is about 1304.7665496492.

Adding to 2221255123 its reverse (3215521222), we get a palindrome (5436776345).

The spelling of 2221255123 in words is "two billion, two hundred twenty-one million, two hundred fifty-five thousand, one hundred twenty-three".