1200210111011 has 4 divisors (see below), whose sum is σ = 1200215170224. Its totient is φ = 1200205051800.

The previous prime is 1200210110999. The next prime is 1200210111077. The reversal of 1200210111011 is 1101110120021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200210111011 - 2²⁶ = 1200143002147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200210110983 and 1200210111001.

It is not an unprimeable number, because it can be changed into a prime (1200210111091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2155295 + ... + 2654376.

It is an arithmetic number, because the mean of its divisors is an integer number (300053792556).

Almost surely, 2^{1200210111011} is an apocalyptic number.

1200210111011 is a deficient number, since it is larger than the sum of its proper divisors (5059213).

1200210111011 is an equidigital number, since it uses as much as digits as its factorization.

1200210111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059212.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1200210111011 its reverse (1101110120021), we get a palindrome (2301320231032).

The spelling of 1200210111011 in words is "one trillion, two hundred billion, two hundred ten million, one hundred eleven thousand, eleven".