1100434021 has 4 divisors (see below), whose sum is σ = 1165165452. Its totient is φ = 1035702592.

The previous prime is 1100434019. The next prime is 1100434031. The reversal of 1100434021 is 1204340011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 524913921 + 575520100 = 22911^2 + 23990^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100434021 - 2¹ = 1100434019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100433986 and 1100434004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100434031) 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, 32365690 + ... + 32365723.

It is an arithmetic number, because the mean of its divisors is an integer number (291291363).

Almost surely, 2^1100434021 is an apocalyptic number.

It is an amenable number.

1100434021 is a deficient number, since it is larger than the sum of its proper divisors (64731431).

1100434021 is an equidigital number, since it uses as much as digits as its factorization.

1100434021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64731430.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1100434021 is about 33172.7903710255. The cubic root of 1100434021 is about 1032.4158646488.

Adding to 1100434021 its reverse (1204340011), we get a palindrome (2304774032).

The spelling of 1100434021 in words is "one billion, one hundred million, four hundred thirty-four thousand, twenty-one".