123102200 has 96 divisors (see below), whose sum is σ = 311698800. Its totient is φ = 44943360.

The previous prime is 123102193. The next prime is 123102211. The reversal of 123102200 is 2201321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293591 + ... + 294009.

Almost surely, 2^123102200 is an apocalyptic number.

123102200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155849400).

123102200 is an abundant number, since it is smaller than the sum of its proper divisors (188596600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123102200 is a wasteful number, since it uses less digits than its factorization.

123102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 123102200 is about 11095.1430815470. The cubic root of 123102200 is about 497.4566850330.

Adding to 123102200 its reverse (2201321), we get a palindrome (125303521).

The spelling of 123102200 in words is "one hundred twenty-three million, one hundred two thousand, two hundred".