21403302033 has 8 divisors (see below), whose sum is σ = 28543981248. Its totient is φ = 14265745424.

The previous prime is 21403301993. The next prime is 21403302079. The reversal of 21403302033 is 33020330412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21403302033 - 2¹³ = 21403293841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21403302083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764610 + ... + 792107.

It is an arithmetic number, because the mean of its divisors is an integer number (3567997656).

Almost surely, 2^21403302033 is an apocalyptic number.

It is an amenable number.

21403302033 is a deficient number, since it is larger than the sum of its proper divisors (7140679215).

21403302033 is a wasteful number, since it uses less digits than its factorization.

21403302033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561303.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21403302033 its reverse (33020330412), we get a palindrome (54423632445).

The spelling of 21403302033 in words is "twenty-one billion, four hundred three million, three hundred two thousand, thirty-three".