1200111211211 has 8 divisors (see below), whose sum is σ = 1313342241264. Its totient is φ = 1087568516320.

The previous prime is 1200111211207. The next prime is 1200111211213. The reversal of 1200111211211 is 1121121110021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200111211211 - 2² = 1200111211207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200111211213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172080140 + ... + 172087113.

It is an arithmetic number, because the mean of its divisors is an integer number (164167780158).

Almost surely, 2^{1200111211211} is an apocalyptic number.

1200111211211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200111211211 is a deficient number, since it is larger than the sum of its proper divisors (113231030053).

1200111211211 is a wasteful number, since it uses less digits than its factorization.

1200111211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344167581.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1200111211211 its reverse (1121121110021), we get a palindrome (2321232321232).

The spelling of 1200111211211 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred eleven thousand, two hundred eleven".