1121212200011 has 4 divisors (see below), whose sum is σ = 1126151461032. Its totient is φ = 1116272938992.

The previous prime is 1121212200007. The next prime is 1121212200013. The reversal of 1121212200011 is 1100022121211.

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 1121212200011 - 2² = 1121212200007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121212200013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2469630170 + ... + 2469630623.

It is an arithmetic number, because the mean of its divisors is an integer number (281537865258).

Almost surely, 2^{1121212200011} is an apocalyptic number.

1121212200011 is a deficient number, since it is larger than the sum of its proper divisors (4939261021).

1121212200011 is an equidigital number, since it uses as much as digits as its factorization.

1121212200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939261020.

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

Adding to 1121212200011 its reverse (1100022121211), we get a palindrome (2221234321222).

It can be divided in two parts, 112121 and 2200011, that added together give a palindrome (2312132).

The spelling of 1121212200011 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, two hundred thousand, eleven".