1200121210012 has 12 divisors (see below), whose sum is σ = 2191525688016. Its totient is φ = 573971013440.

The previous prime is 1200121210003. The next prime is 1200121210061. The reversal of 1200121210012 is 2100121210021.

It is a junction number, because it is equal to n+sod(n) for n = 1200121209974 and 1200121210001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6522397789 + ... + 6522397972.

It is an arithmetic number, because the mean of its divisors is an integer number (182627140668).

Almost surely, 2^{1200121210012} is an apocalyptic number.

It is an amenable number.

1200121210012 is a deficient number, since it is larger than the sum of its proper divisors (991404478004).

1200121210012 is a wasteful number, since it uses less digits than its factorization.

1200121210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13044795788 (or 13044795786 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200121210012 its reverse (2100121210021), we get a palindrome (3300242420033).

Subtracting 1200121210012 from its reverse (2100121210021), we obtain a palindrome (900000000009).

The spelling of 1200121210012 in words is "one trillion, two hundred billion, one hundred twenty-one million, two hundred ten thousand, twelve".