2221263497 has 6 divisors (see below), whose sum is σ = 2300500878. Its totient is φ = 2144667392.

The previous prime is 2221263467. The next prime is 2221263509. The reversal of 2221263497 is 7943621222.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 223084096 + 1998179401 = 14936^2 + 44701^2 .

It is not a de Polignac number, because 2221263497 - 2⁸ = 2221263241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221263497.

It is not an unprimeable number, because it can be changed into a prime (2221263467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1319768 + ... + 1321449.

It is an arithmetic number, because the mean of its divisors is an integer number (383416813).

Almost surely, 2^2221263497 is an apocalyptic number.

It is an amenable number.

2221263497 is a deficient number, since it is larger than the sum of its proper divisors (79237381).

2221263497 is an equidigital number, since it uses as much as digits as its factorization.

2221263497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641275 (or 2641246 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 2221263497 is about 47130.2821655037. The cubic root of 2221263497 is about 1304.7681892779.

The spelling of 2221263497 in words is "two billion, two hundred twenty-one million, two hundred sixty-three thousand, four hundred ninety-seven".