1102111001 has 4 divisors (see below), whose sum is σ = 1103567652. Its totient is φ = 1100654352.

The previous prime is 1102110937. The next prime is 1102111007. The reversal of 1102111001 is 1001112011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1001112011 = 2689 ⋅372299.

It can be written as a sum of positive squares in 2 ways, for example, as 246490000 + 855621001 = 15700^2 + 29251^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102111001 - 2⁶ = 1102110937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1102111001.

It is not an unprimeable number, because it can be changed into a prime (1102111007) 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, 727190 + ... + 728703.

It is an arithmetic number, because the mean of its divisors is an integer number (275891913).

Almost surely, 2^1102111001 is an apocalyptic number.

It is an amenable number.

1102111001 is a deficient number, since it is larger than the sum of its proper divisors (1456651).

1102111001 is an equidigital number, since it uses as much as digits as its factorization.

1102111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456650.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1102111001 is about 33198.0571871307. The cubic root of 1102111001 is about 1032.9400402587.

Adding to 1102111001 its reverse (1001112011), we get a palindrome (2103223012).

It can be divided in two parts, 11021 and 11001, that added together give a palindrome (22022).

The spelling of 1102111001 in words is "one billion, one hundred two million, one hundred eleven thousand, one".