1121102111 has 4 divisors (see below), whose sum is σ = 1187049312. Its totient is φ = 1055154912.

The previous prime is 1121102093. The next prime is 1121102113. The reversal of 1121102111 is 1112011211.

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

It is not a de Polignac number, because 1121102111 - 2²⁶ = 1053993247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121102092 and 1121102101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121102113) 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, 32973575 + ... + 32973608.

It is an arithmetic number, because the mean of its divisors is an integer number (296762328).

Almost surely, 2^1121102111 is an apocalyptic number.

1121102111 is a deficient number, since it is larger than the sum of its proper divisors (65947201).

1121102111 is an equidigital number, since it uses as much as digits as its factorization.

1121102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65947200.

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

The square root of 1121102111 is about 33482.8629450948. The cubic root of 1121102111 is about 1038.8393458936.

Adding to 1121102111 its reverse (1112011211), we get a palindrome (2233113322).

The spelling of 1121102111 in words is "one billion, one hundred twenty-one million, one hundred two thousand, one hundred eleven".