21323003033 has 8 divisors (see below), whose sum is σ = 21691735968. Its totient is φ = 20956932864.

The previous prime is 21323003021. The next prime is 21323003057. The reversal of 21323003033 is 33030032312.

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 21323003033 - 2¹⁸ = 21322740889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21323002996 and 21323003014.

It is not an unprimeable number, because it can be changed into a prime (21323003633) 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, 649535 + ... + 681572.

It is an arithmetic number, because the mean of its divisors is an integer number (2711466996).

Almost surely, 2^21323003033 is an apocalyptic number.

It is an amenable number.

21323003033 is a deficient number, since it is larger than the sum of its proper divisors (368732935).

21323003033 is a wasteful number, since it uses less digits than its factorization.

21323003033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331383.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 21323003033 its reverse (33030032312), we get a palindrome (54353035345).

The spelling of 21323003033 in words is "twenty-one billion, three hundred twenty-three million, three thousand, thirty-three".