1200122111211 has 8 divisors (see below), whose sum is σ = 1602773197200. Its totient is φ = 798776216352.

The previous prime is 1200122111189. The next prime is 1200122111261. The reversal of 1200122111211 is 1121112210021.

It is a happy number.

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

It is not a de Polignac number, because 1200122111211 - 2⁶ = 1200122111147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200122111261) 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, 326295636 + ... + 326299313.

It is an arithmetic number, because the mean of its divisors is an integer number (200346649650).

Almost surely, 2^{1200122111211} is an apocalyptic number.

1200122111211 is a deficient number, since it is larger than the sum of its proper divisors (402651085989).

1200122111211 is an equidigital number, since it uses as much as digits as its factorization.

1200122111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652595565.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1200122111211 its reverse (1121112210021), we get a palindrome (2321234321232).

The spelling of 1200122111211 in words is "one trillion, two hundred billion, one hundred twenty-two million, one hundred eleven thousand, two hundred eleven".