21201303033 has 24 divisors (see below), whose sum is σ = 31011428448. Its totient is φ = 13956302592.

The previous prime is 21201303029. The next prime is 21201303043. The reversal of 21201303033 is 33030310212.

It is not a de Polignac number, because 21201303033 - 2² = 21201303029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21201302997 and 21201303015.

It is not an unprimeable number, because it can be changed into a prime (21201303043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259785 + ... + 331497.

It is an arithmetic number, because the mean of its divisors is an integer number (1292142852).

Almost surely, 2^21201303033 is an apocalyptic number.

It is an amenable number.

21201303033 is a deficient number, since it is larger than the sum of its proper divisors (9810125415).

21201303033 is a wasteful number, since it uses less digits than its factorization.

21201303033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72133 (or 72130 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21201303033 its reverse (33030310212), we get a palindrome (54231613245).

The spelling of 21201303033 in words is "twenty-one billion, two hundred one million, three hundred three thousand, thirty-three".