1121101111 has 16 divisors (see below), whose sum is σ = 1261380960. Its totient is φ = 989251200.

The previous prime is 1121101063. The next prime is 1121101153. The reversal of 1121101111 is 1111011211.

It is a cyclic number.

It is not a de Polignac number, because 1121101111 - 2¹⁹ = 1120576823 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 (1121101411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23356 + ... + 52798.

It is an arithmetic number, because the mean of its divisors is an integer number (78836310).

Almost surely, 2^1121101111 is an apocalyptic number.

1121101111 is a deficient number, since it is larger than the sum of its proper divisors (140279849).

1121101111 is a wasteful number, since it uses less digits than its factorization.

1121101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29586.

The product of its (nonzero) digits is 2, while the sum is 10.

The square root of 1121101111 is about 33482.8480120793. The cubic root of 1121101111 is about 1038.8390370191.

Adding to 1121101111 its reverse (1111011211), we get a palindrome (2232112322).

The spelling of 1121101111 in words is "one billion, one hundred twenty-one million, one hundred one thousand, one hundred eleven".