33103100021 has 4 divisors (see below), whose sum is σ = 33134961600. Its totient is φ = 33071238444.

The previous prime is 33103099987. The next prime is 33103100053. The reversal of 33103100021 is 12000130133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33103100021 - 2¹⁰ = 33103098997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33103099969 and 33103100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33103100321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15929231 + ... + 15931308.

It is an arithmetic number, because the mean of its divisors is an integer number (8283740400).

Almost surely, 2^33103100021 is an apocalyptic number.

It is an amenable number.

33103100021 is a deficient number, since it is larger than the sum of its proper divisors (31861579).

33103100021 is a wasteful number, since it uses less digits than its factorization.

33103100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31861578.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 33103100021 its reverse (12000130133), we get a palindrome (45103230154).

The spelling of 33103100021 in words is "thirty-three billion, one hundred three million, one hundred thousand, twenty-one".