123211099 has 8 divisors (see below), whose sum is σ = 134991792. Its totient is φ = 111527040.

The previous prime is 123211063. The next prime is 123211117. The reversal of 123211099 is 990112321.

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 123211099 - 2²⁵ = 89656667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123211799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21474 + ... + 26599.

It is an arithmetic number, because the mean of its divisors is an integer number (16873974).

Almost surely, 2^123211099 is an apocalyptic number.

123211099 is a deficient number, since it is larger than the sum of its proper divisors (11780693).

123211099 is a wasteful number, since it uses less digits than its factorization.

123211099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48317.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 123211099 is about 11100.0495043941. The cubic root of 123211099 is about 497.6033289579.

The spelling of 123211099 in words is "one hundred twenty-three million, two hundred eleven thousand, ninety-nine".