2221997498 has 16 divisors (see below), whose sum is σ = 3810071040. Its totient is φ = 952051536.

The previous prime is 2221997471. The next prime is 2221997507. The reversal of 2221997498 is 8947991222.

It is a super-2 number, since 2×2221997498² = 9874545762236520008, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 47840 + ... + 82052.

It is an arithmetic number, because the mean of its divisors is an integer number (238129440).

Almost surely, 2^2221997498 is an apocalyptic number.

2221997498 is a deficient number, since it is larger than the sum of its proper divisors (1588073542).

2221997498 is a wasteful number, since it uses less digits than its factorization.

2221997498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38861.

The product of its digits is 1306368, while the sum is 53.

The square root of 2221997498 is about 47138.0684585187. The cubic root of 2221997498 is about 1304.9118906275.

The spelling of 2221997498 in words is "two billion, two hundred twenty-one million, nine hundred ninety-seven thousand, four hundred ninety-eight".