1200120221212 has 12 divisors (see below), whose sum is σ = 2291138604216. Its totient is φ = 545509191440.

The previous prime is 1200120221191. The next prime is 1200120221239. The reversal of 1200120221212 is 2121220210021.

It is a happy number.

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, 13637729743 + ... + 13637729830.

It is an arithmetic number, because the mean of its divisors is an integer number (190928217018).

Almost surely, 2^{1200120221212} is an apocalyptic number.

It is an amenable number.

1200120221212 is a deficient number, since it is larger than the sum of its proper divisors (1091018383004).

1200120221212 is a wasteful number, since it uses less digits than its factorization.

1200120221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27275459588 (or 27275459586 counting only the distinct ones).

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

Adding to 1200120221212 its reverse (2121220210021), we get a palindrome (3321340431233).

The spelling of 1200120221212 in words is "one trillion, two hundred billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twelve".