1105133921 has 2 divisors, whose sum is σ = 1105133922. Its totient is φ = 1105133920.

The previous prime is 1105133903. The next prime is 1105133987. The reversal of 1105133921 is 1293315011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952339600 + 152794321 = 30860^2 + 12361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105133921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105133321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552566960 + 552566961.

It is an arithmetic number, because the mean of its divisors is an integer number (552566961).

Almost surely, 2^1105133921 is an apocalyptic number.

It is an amenable number.

1105133921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105133921 is an equidigital number, since it uses as much as digits as its factorization.

1105133921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1105133921 is about 33243.5545782938. The cubic root of 1105133921 is about 1033.8835763773.

Adding to 1105133921 its reverse (1293315011), we get a palindrome (2398448932).

The spelling of 1105133921 in words is "one billion, one hundred five million, one hundred thirty-three thousand, nine hundred twenty-one".