221149255 has 8 divisors (see below), whose sum is σ = 276917472. Its totient is φ = 169227168.

The previous prime is 221149213. The next prime is 221149261. The reversal of 221149255 is 552941122.

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

It is a cyclic number.

It is not a de Polignac number, because 221149255 - 2⁷ = 221149127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961404 + ... + 961633.

It is an arithmetic number, because the mean of its divisors is an integer number (34614684).

Almost surely, 2^221149255 is an apocalyptic number.

221149255 is a deficient number, since it is larger than the sum of its proper divisors (55768217).

221149255 is a wasteful number, since it uses less digits than its factorization.

221149255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923065.

The product of its digits is 7200, while the sum is 31.

The square root of 221149255 is about 14871.0878889206. The cubic root of 221149255 is about 604.7304356558.

The spelling of 221149255 in words is "two hundred twenty-one million, one hundred forty-nine thousand, two hundred fifty-five".