2221616057 has 4 divisors (see below), whose sum is σ = 2252906496. Its totient is φ = 2190325620.

The previous prime is 2221616051. The next prime is 2221616063. The reversal of 2221616057 is 7506161222.

2221616057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2221616051) and next prime (2221616063).

It is a cyclic number.

It is not a de Polignac number, because 2221616057 - 2⁴ = 2221616041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221616051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15645113 + ... + 15645254.

It is an arithmetic number, because the mean of its divisors is an integer number (563226624).

Almost surely, 2^2221616057 is an apocalyptic number.

It is an amenable number.

2221616057 is a deficient number, since it is larger than the sum of its proper divisors (31290439).

2221616057 is an equidigital number, since it uses as much as digits as its factorization.

2221616057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31290438.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2221616057 is about 47134.0222875154. The cubic root of 2221616057 is about 1304.8372167688.

Adding to 2221616057 its reverse (7506161222), we get a palindrome (9727777279).

The spelling of 2221616057 in words is "two billion, two hundred twenty-one million, six hundred sixteen thousand, fifty-seven".