221098958 has 16 divisors (see below), whose sum is σ = 343586880. Its totient is φ = 106581216.

The previous prime is 221098883. The next prime is 221098961. The reversal of 221098958 is 859890122.

It is a congruent number.

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, 43835 + ... + 48617.

It is an arithmetic number, because the mean of its divisors is an integer number (21474180).

Almost surely, 2^221098958 is an apocalyptic number.

221098958 is a deficient number, since it is larger than the sum of its proper divisors (122487922).

221098958 is a wasteful number, since it uses less digits than its factorization.

221098958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 221098958 is about 14869.3966925360. The cubic root of 221098958 is about 604.6845866312.

The spelling of 221098958 in words is "two hundred twenty-one million, ninety-eight thousand, nine hundred fifty-eight".