1212212222200 has 96 divisors (see below), whose sum is σ = 3221261683200. Its totient is φ = 415584570240.

The previous prime is 1212212222191. The next prime is 1212212222231. The reversal of 1212212222200 is 22222122121.

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, 26463717 + ... + 26509483.

It is an arithmetic number, because the mean of its divisors is an integer number (33554809200).

Almost surely, 2^{1212212222200} is an apocalyptic number.

1212212222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212212222200 is an abundant number, since it is smaller than the sum of its proper divisors (2009049461000).

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

1212212222200 is a wasteful number, since it uses less digits than its factorization.

1212212222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64709 (or 64700 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1212212222200 its reverse (22222122121), we get a palindrome (1234434344321).

The spelling of 1212212222200 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two hundred twenty-two thousand, two hundred".