1102001121 has 48 divisors (see below), whose sum is σ = 1811031040. Its totient is φ = 640120320.

The previous prime is 1102001111. The next prime is 1102001129. The reversal of 1102001121 is 1211002011.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1102001121 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1102001129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 748416 + ... + 749886.

Almost surely, 2^1102001121 is an apocalyptic number.

It is an amenable number.

1102001121 is a deficient number, since it is larger than the sum of its proper divisors (709029919).

1102001121 is a wasteful number, since it uses less digits than its factorization.

1102001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1102001121 is about 33196.4022297598. The cubic root of 1102001121 is about 1032.9057112230.

Adding to 1102001121 its reverse (1211002011), we get a palindrome (2313003132).

The spelling of 1102001121 in words is "one billion, one hundred two million, one thousand, one hundred twenty-one".