2221402265 has 4 divisors (see below), whose sum is σ = 2665682724. Its totient is φ = 1777121808.

The previous prime is 2221402259. The next prime is 2221402277. The reversal of 2221402265 is 5622041222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 398880784 + 1822521481 = 19972^2 + 42691^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221402265 - 2⁶ = 2221402201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222140222 + ... + 222140231.

It is an arithmetic number, because the mean of its divisors is an integer number (666420681).

Almost surely, 2^2221402265 is an apocalyptic number.

It is an amenable number.

2221402265 is a deficient number, since it is larger than the sum of its proper divisors (444280459).

2221402265 is an equidigital number, since it uses as much as digits as its factorization.

2221402265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444280458.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2221402265 is about 47131.7543170207. The cubic root of 2221402265 is about 1304.7953594451.

Adding to 2221402265 its reverse (5622041222), we get a palindrome (7843443487).

The spelling of 2221402265 in words is "two billion, two hundred twenty-one million, four hundred two thousand, two hundred sixty-five".