1200121011212 has 24 divisors (see below), whose sum is σ = 2212464500400. Its totient is φ = 568037304576.

The previous prime is 1200121011211. The next prime is 1200121011241. The reversal of 1200121011212 is 2121101210021.

It is not an unprimeable number, because it can be changed into a prime (1200121011211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6027353 + ... + 6223280.

It is an arithmetic number, because the mean of its divisors is an integer number (92186020850).

Almost surely, 2^{1200121011212} is an apocalyptic number.

It is an amenable number.

1200121011212 is a deficient number, since it is larger than the sum of its proper divisors (1012343489188).

1200121011212 is a wasteful number, since it uses less digits than its factorization.

1200121011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12251945 (or 12251943 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200121011212 its reverse (2121101210021), we get a palindrome (3321222221233).

The spelling of 1200121011212 in words is "one trillion, two hundred billion, one hundred twenty-one million, eleven thousand, two hundred twelve".