1212202100200 has 96 divisors (see below), whose sum is σ = 3468762984960. Its totient is φ = 383641977600.

The previous prime is 1212202100177. The next prime is 1212202100227. The reversal of 1212202100200 is 20012022121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 33284056 + ... + 33320455.

It is an arithmetic number, because the mean of its divisors is an integer number (36132947760).

Almost surely, 2^{1212202100200} is an apocalyptic number.

1212202100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212202100200 is an abundant number, since it is smaller than the sum of its proper divisors (2256560884760).

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

1212202100200 is a wasteful number, since it uses less digits than its factorization.

1212202100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66604547 (or 66604538 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1212202100200 its reverse (20012022121), we get a palindrome (1232214122321).

The spelling of 1212202100200 in words is "one trillion, two hundred twelve billion, two hundred two million, one hundred thousand, two hundred".