109212211 has 16 divisors (see below), whose sum is σ = 116759808. Its totient is φ = 101930400.

The previous prime is 109212193. The next prime is 109212251. The reversal of 109212211 is 112212901.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 109212211 - 2⁵ = 109212179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109212251) 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, 201601 + ... + 202141.

It is an arithmetic number, because the mean of its divisors is an integer number (7297488).

Almost surely, 2^109212211 is an apocalyptic number.

109212211 is a deficient number, since it is larger than the sum of its proper divisors (7547597).

109212211 is a wasteful number, since it uses less digits than its factorization.

109212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 109212211 is about 10450.4646308191. The cubic root of 109212211 is about 477.9954175783.

The spelling of 109212211 in words is "one hundred nine million, two hundred twelve thousand, two hundred eleven".