1200121222012 has 12 divisors (see below), whose sum is σ = 2100386528800. Its totient is φ = 600010785216.

The previous prime is 1200121222007. The next prime is 1200121222019. The reversal of 1200121222012 is 2102221210021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200121222019) 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, 12402228 + ... + 12498619.

Almost surely, 2^{1200121222012} is an apocalyptic number.

It is an amenable number.

1200121222012 is a deficient number, since it is larger than the sum of its proper divisors (900265306788).

1200121222012 is a wasteful number, since it uses less digits than its factorization.

1200121222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24912900 (or 24912898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1200121222012 its reverse (2102221210021), we get a palindrome (3302342432033).

The spelling of 1200121222012 in words is "one trillion, two hundred billion, one hundred twenty-one million, two hundred twenty-two thousand, twelve".