1121121110111 has 4 divisors (see below), whose sum is σ = 1132221319224. Its totient is φ = 1110020901000.

The previous prime is 1121121110107. The next prime is 1121121110167. The reversal of 1121121110111 is 1110111211211.

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 1121121110111 - 2² = 1121121110107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121121110611) 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, 5550104405 + ... + 5550104606.

It is an arithmetic number, because the mean of its divisors is an integer number (283055329806).

Almost surely, 2^{1121121110111} is an apocalyptic number.

1121121110111 is a deficient number, since it is larger than the sum of its proper divisors (11100209113).

1121121110111 is a wasteful number, since it uses less digits than its factorization.

1121121110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100209112.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 1121121110111 its reverse (1110111211211), we get a palindrome (2231232321322).

The spelling of 1121121110111 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred ten thousand, one hundred eleven".