1100433421 has 4 divisors (see below), whose sum is σ = 1101718332. Its totient is φ = 1099148512.

The previous prime is 1100433407. The next prime is 1100433427. The reversal of 1100433421 is 1243340011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1243340011 = 12109 ⋅102679.

It can be written as a sum of positive squares in 2 ways, for example, as 1037548521 + 62884900 = 32211^2 + 7930^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100433421 - 2¹¹ = 1100431373 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 (1100433427) 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, 641170 + ... + 642883.

It is an arithmetic number, because the mean of its divisors is an integer number (275429583).

Almost surely, 2^1100433421 is an apocalyptic number.

It is an amenable number.

1100433421 is a deficient number, since it is larger than the sum of its proper divisors (1284911).

1100433421 is an equidigital number, since it uses as much as digits as its factorization.

1100433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284910.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1100433421 is about 33172.7813274679. The cubic root of 1100433421 is about 1032.4156770109.

Adding to 1100433421 its reverse (1243340011), we get a palindrome (2343773432).

The spelling of 1100433421 in words is "one billion, one hundred million, four hundred thirty-three thousand, four hundred twenty-one".