221149085 has 8 divisors (see below), whose sum is σ = 266141400. Its totient is φ = 176410944.

The previous prime is 221149067. The next prime is 221149127. The reversal of 221149085 is 580941122.

It can be written as a sum of positive squares in 4 ways, for example, as 27994681 + 193154404 = 5291^2 + 13898^2 .

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 221149085 - 2¹⁶ = 221083549 is a prime.

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, 61622 + ... + 65111.

It is an arithmetic number, because the mean of its divisors is an integer number (33267675).

Almost surely, 2^221149085 is an apocalyptic number.

It is an amenable number.

221149085 is a deficient number, since it is larger than the sum of its proper divisors (44992315).

221149085 is a wasteful number, since it uses less digits than its factorization.

221149085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127087.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 221149085 is about 14871.0821731305. The cubic root of 221149085 is about 604.7302807013.

The spelling of 221149085 in words is "two hundred twenty-one million, one hundred forty-nine thousand, eighty-five".