1121013111 has 4 divisors (see below), whose sum is σ = 1494684152. Its totient is φ = 747342072.

The previous prime is 1121013083. The next prime is 1121013137. The reversal of 1121013111 is 1113101211.

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

It is not a de Polignac number, because 1121013111 - 2⁵ = 1121013079 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 (1121013191) 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, 186835516 + ... + 186835521.

It is an arithmetic number, because the mean of its divisors is an integer number (373671038).

Almost surely, 2^1121013111 is an apocalyptic number.

1121013111 is a deficient number, since it is larger than the sum of its proper divisors (373671041).

1121013111 is an equidigital number, since it uses as much as digits as its factorization.

1121013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373671040.

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 1121013111 is about 33481.5338806334. The cubic root of 1121013111 is about 1038.8118553413.

Adding to 1121013111 its reverse (1113101211), we get a palindrome (2234114322).

The spelling of 1121013111 in words is "one billion, one hundred twenty-one million, thirteen thousand, one hundred eleven".