2221928755 has 4 divisors (see below), whose sum is σ = 2666314512. Its totient is φ = 1777543000.

The previous prime is 2221928717. The next prime is 2221928759. The reversal of 2221928755 is 5578291222.

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

It is not a de Polignac number, because 2221928755 - 2²⁵ = 2188374323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221928759) 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 in 3 ways as a sum of consecutive naturals, for example, 222192871 + ... + 222192880.

It is an arithmetic number, because the mean of its divisors is an integer number (666578628).

Almost surely, 2^2221928755 is an apocalyptic number.

2221928755 is a deficient number, since it is larger than the sum of its proper divisors (444385757).

2221928755 is an equidigital number, since it uses as much as digits as its factorization.

2221928755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444385756.

The product of its digits is 201600, while the sum is 43.

The square root of 2221928755 is about 47137.3392863874. The cubic root of 2221928755 is about 1304.8984335941.

The spelling of 2221928755 in words is "two billion, two hundred twenty-one million, nine hundred twenty-eight thousand, seven hundred fifty-five".