221099026 has 8 divisors (see below), whose sum is σ = 331824384. Its totient is φ = 110490900.

The previous prime is 221098967. The next prime is 221099033. The reversal of 221099026 is 620990122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24430 + ... + 32233.

It is an arithmetic number, because the mean of its divisors is an integer number (41478048).

Almost surely, 2^221099026 is an apocalyptic number.

221099026 is a deficient number, since it is larger than the sum of its proper divisors (110725358).

221099026 is a wasteful number, since it uses less digits than its factorization.

221099026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58616.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 221099026 is about 14869.3989791114. The cubic root of 221099026 is about 604.6846486223.

The spelling of 221099026 in words is "two hundred twenty-one million, ninety-nine thousand, twenty-six".