121200202212012 has 72 divisors (see below), whose sum is σ = 381964273646592. Its totient is φ = 31480572002400.

The previous prime is 121200202211989. The next prime is 121200202212043. The reversal of 121200202212012 is 210212202002121.

It is a happy number.

121200202212012 is a `hidden beast` number, since 1 + 21 + 200 + 20 + 221 + 201 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 21861505564 + ... + 21861511107.

Almost surely, 2^{121200202212012} is an apocalyptic number.

121200202212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121200202212012 is an abundant number, since it is smaller than the sum of its proper divisors (260764071434580).

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

121200202212012 is a wasteful number, since it uses less digits than its factorization.

121200202212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43723016699 (or 43723016694 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121200202212012 its reverse (210212202002121), we get a palindrome (331412404214133).

The spelling of 121200202212012 in words is "one hundred twenty-one trillion, two hundred billion, two hundred two million, two hundred twelve thousand, twelve".