1121200120111 has 4 divisors (see below), whose sum is σ = 1121214709224. Its totient is φ = 1121185531000.

The previous prime is 1121200120109. The next prime is 1121200120147. The reversal of 1121200120111 is 1110210021211.

It is a happy number.

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 1121200120111 - 2¹ = 1121200120109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121200120091 and 1121200120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121200123111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7178665 + ... + 7333186.

It is an arithmetic number, because the mean of its divisors is an integer number (280303677306).

Almost surely, 2^{1121200120111} is an apocalyptic number.

1121200120111 is a deficient number, since it is larger than the sum of its proper divisors (14589113).

1121200120111 is an equidigital number, since it uses as much as digits as its factorization.

1121200120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14589112.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1121200120111 its reverse (1110210021211), we get a palindrome (2231410141322).

The spelling of 1121200120111 in words is "one trillion, one hundred twenty-one billion, two hundred million, one hundred twenty thousand, one hundred eleven".