1212113200 has 30 divisors (see below), whose sum is σ = 2912102924. Its totient is φ = 484845120.

The previous prime is 1212113191. The next prime is 1212113213. The reversal of 1212113200 is 23112121.

It is a super-2 number, since 2×1212113200² = 2938436819228480000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1514742 + ... + 1515541.

Almost surely, 2^1212113200 is an apocalyptic number.

1212113200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212113200 is an abundant number, since it is smaller than the sum of its proper divisors (1699989724).

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

1212113200 is a wasteful number, since it uses less digits than its factorization.

1212113200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030301 (or 3030290 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1212113200 is about 34815.4161256188. The cubic root of 1212113200 is about 1066.2222150081. Note that the first 4 decimals are identical.

Adding to 1212113200 its reverse (23112121), we get a palindrome (1235225321).

The spelling of 1212113200 in words is "one billion, two hundred twelve million, one hundred thirteen thousand, two hundred".