1121101011 has 12 divisors (see below), whose sum is σ = 1653823392. Its totient is φ = 731498256.

The previous prime is 1121101001. The next prime is 1121101021. The reversal of 1121101011 is 1101011211.

It is an interprime number because it is at equal distance from previous prime (1121101001) and next prime (1121101021).

It is not a de Polignac number, because 1121101011 - 2⁹ = 1121100499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1121100984 and 1121101002.

It is not an unprimeable number, because it can be changed into a prime (1121101001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1324756 + ... + 1325601.

It is an arithmetic number, because the mean of its divisors is an integer number (137818616).

Almost surely, 2^1121101011 is an apocalyptic number.

1121101011 is a deficient number, since it is larger than the sum of its proper divisors (532722381).

1121101011 is a wasteful number, since it uses less digits than its factorization.

1121101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650410 (or 2650407 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The square root of 1121101011 is about 33482.8465187773. The cubic root of 1121101011 is about 1038.8390061316.

Adding to 1121101011 its reverse (1101011211), we get a palindrome (2222112222).

The spelling of 1121101011 in words is "one billion, one hundred twenty-one million, one hundred one thousand, eleven".