1200120211211 has 16 divisors (see below), whose sum is σ = 1263526387200. Its totient is φ = 1138212717600.

The previous prime is 1200120211193. The next prime is 1200120211219. The reversal of 1200120211211 is 1121120210021.

It is not a de Polignac number, because 1200120211211 - 2¹⁰ = 1200120210187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200120211219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1937246 + ... + 2480556.

It is an arithmetic number, because the mean of its divisors is an integer number (78970399200).

Almost surely, 2^{1200120211211} is an apocalyptic number.

1200120211211 is a deficient number, since it is larger than the sum of its proper divisors (63406175989).

1200120211211 is a wasteful number, since it uses less digits than its factorization.

1200120211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544690.

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

Adding to 1200120211211 its reverse (1121120210021), we get a palindrome (2321240421232).

The spelling of 1200120211211 in words is "one trillion, two hundred billion, one hundred twenty million, two hundred eleven thousand, two hundred eleven".