1200121210212 has 12 divisors (see below), whose sum is σ = 2800282823856. Its totient is φ = 400040403400.

The previous prime is 1200121210181. The next prime is 1200121210213. The reversal of 1200121210212 is 2120121210021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1200121210191 and 1200121210200.

It is not an unprimeable number, because it can be changed into a prime (1200121210213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50005050414 + ... + 50005050437.

It is an arithmetic number, because the mean of its divisors is an integer number (233356901988).

Almost surely, 2^{1200121210212} is an apocalyptic number.

1200121210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200121210212 is an abundant number, since it is smaller than the sum of its proper divisors (1600161613644).

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

1200121210212 is a wasteful number, since it uses less digits than its factorization.

1200121210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100010100858 (or 100010100856 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1200121210212 its reverse (2120121210021), we get a palindrome (3320242420233).

The spelling of 1200121210212 in words is "one trillion, two hundred billion, one hundred twenty-one million, two hundred ten thousand, two hundred twelve".