121112222123200 has 168 divisors, whose sum is σ = 371547131675904. Its totient is φ = 37749264000000.

The previous prime is 121112222123183. The next prime is 121112222123227. The reversal of 121112222123200 is 2321222211121.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 491403676 + ... + 491650075.

Almost surely, 2^{121112222123200} is an apocalyptic number.

121112222123200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112222123200 is an abundant number, since it is smaller than the sum of its proper divisors (250434909552704).

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

121112222123200 is a wasteful number, since it uses less digits than its factorization.

121112222123200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983053791 (or 983053776 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 121112222123200 its reverse (2321222211121), we get a palindrome (123433444334321).

The spelling of 121112222123200 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-three thousand, two hundred".