12203100 has 216 divisors, whose sum is σ = 47392800. Its totient is φ = 2557440.

The previous prime is 12203089. The next prime is 12203137. The reversal of 12203100 is 130221.

It is a happy number.

12203100 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12203100² = 297831299220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 81826 + ... + 81974.

Almost surely, 2^12203100 is an apocalyptic number.

12203100 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 12203100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23696400).

12203100 is an abundant number, since it is smaller than the sum of its proper divisors (35189700).

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

12203100 is a wasteful number, since it uses less digits than its factorization.

12203100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 12203100 is about 3493.2935748374. The cubic root of 12203100 is about 230.2272486158.

Adding to 12203100 its reverse (130221), we get a palindrome (12333321).

The spelling of 12203100 in words is "twelve million, two hundred three thousand, one hundred".