21120303033 has 6 divisors (see below), whose sum is σ = 30507104394. Its totient is φ = 14080202016.

The previous prime is 21120303023. The next prime is 21120303041. The reversal of 21120303033 is 33030302112.

It can be written as a sum of positive squares in only one way, i.e., 12750248889 + 8370054144 = 112917^2 + 91488^2 .

It is not a de Polignac number, because 21120303033 - 2⁹ = 21120302521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21120302997 and 21120303015.

It is not an unprimeable number, because it can be changed into a prime (21120303013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1173350160 + ... + 1173350177.

It is an arithmetic number, because the mean of its divisors is an integer number (5084517399).

Almost surely, 2^21120303033 is an apocalyptic number.

It is an amenable number.

21120303033 is a deficient number, since it is larger than the sum of its proper divisors (9386801361).

21120303033 is a wasteful number, since it uses less digits than its factorization.

21120303033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346700343 (or 2346700340 counting only the distinct ones).

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

Adding to 21120303033 its reverse (33030302112), we get a palindrome (54150605145).

The spelling of 21120303033 in words is "twenty-one billion, one hundred twenty million, three hundred three thousand, thirty-three".