2221291008 has 60 divisors (see below), whose sum is σ = 6410809548. Its totient is φ = 740428800.

The previous prime is 2221290983. The next prime is 2221291031. The reversal of 2221291008 is 8001921222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236418 + ... + 245633.

Almost surely, 2^2221291008 is an apocalyptic number.

It is an amenable number.

2221291008 is an abundant number, since it is smaller than the sum of its proper divisors (4189518540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221291008 is an equidigital number, since it uses as much as digits as its factorization.

2221291008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482075 (or 482056 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 2221291008 is about 47130.5740257850. The cubic root of 2221291008 is about 1304.7735759013.

The spelling of 2221291008 in words is "two billion, two hundred twenty-one million, two hundred ninety-one thousand, eight".