1200230100 has 108 divisors (see below), whose sum is σ = 3883501440. Its totient is φ = 309729600.

The previous prime is 1200230099. The next prime is 1200230123. The reversal of 1200230100 is 10320021.

It is a happy number.

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 35 ways as a sum of consecutive naturals, for example, 6391 + ... + 49409.

Almost surely, 2^1200230100 is an apocalyptic number.

1200230100 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 1200230100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1941750720).

1200230100 is an abundant number, since it is smaller than the sum of its proper divisors (2683271340).

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

1200230100 is a wasteful number, since it uses less digits than its factorization.

1200230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43070 (or 43060 counting only the distinct ones).

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

The square root of 1200230100 is about 34644.3371996059. The cubic root of 1200230100 is about 1062.7264864353.

Adding to 1200230100 its reverse (10320021), we get a palindrome (1210550121).

The spelling of 1200230100 in words is "one billion, two hundred million, two hundred thirty thousand, one hundred".