109221285 has 16 divisors (see below), whose sum is σ = 174888000. Its totient is φ = 58206720.

The previous prime is 109221283. The next prime is 109221341. The reversal of 109221285 is 582122901.

It is not a de Polignac number, because 109221285 - 2¹ = 109221283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109221283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29466 + ... + 32964.

It is an arithmetic number, because the mean of its divisors is an integer number (10930500).

Almost surely, 2^109221285 is an apocalyptic number.

109221285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109221285 is a deficient number, since it is larger than the sum of its proper divisors (65666715).

109221285 is a wasteful number, since it uses less digits than its factorization.

109221285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5588.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 109221285 is about 10450.8987651780. The cubic root of 109221285 is about 478.0086554457.

The spelling of 109221285 in words is "one hundred nine million, two hundred twenty-one thousand, two hundred eighty-five".