21020320233033 has 16 divisors (see below), whose sum is σ = 30575532589056. Its totient is φ = 12739370794640.

The previous prime is 21020320233013. The next prime is 21020320233043. The reversal of 21020320233033 is 33033202302012.

It is a cyclic number.

It is not a de Polignac number, because 21020320233033 - 2¹⁷ = 21020320101961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21020320232994 and 21020320233012.

It is not an unprimeable number, because it can be changed into a prime (21020320233013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3455241 + ... + 7347062.

It is an arithmetic number, because the mean of its divisors is an integer number (1910970786816).

Almost surely, 2^{21020320233033} is an apocalyptic number.

It is an amenable number.

21020320233033 is a deficient number, since it is larger than the sum of its proper divisors (9555212356023).

21020320233033 is a wasteful number, since it uses less digits than its factorization.

21020320233033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10861284.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21020320233033 its reverse (33033202302012), we get a palindrome (54053522535045).

The spelling of 21020320233033 in words is "twenty-one trillion, twenty billion, three hundred twenty million, two hundred thirty-three thousand, thirty-three".