21223031020333 has 2 divisors, whose sum is σ = 21223031020334. Its totient is φ = 21223031020332.

The previous prime is 21223031020181. The next prime is 21223031020493. The reversal of 21223031020333 is 33302013032212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10868910020809 + 10354120999524 = 3296803^2 + 3217782^2 .

It is a cyclic number.

It is not a de Polignac number, because 21223031020333 - 2²⁹ = 21222494149421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21223031020298 and 21223031020307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223031060333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611515510166 + 10611515510167.

It is an arithmetic number, because the mean of its divisors is an integer number (10611515510167).

Almost surely, 2^{21223031020333} is an apocalyptic number.

It is an amenable number.

21223031020333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223031020333 is an equidigital number, since it uses as much as digits as its factorization.

21223031020333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21223031020333 its reverse (33302013032212), we get a palindrome (54525044052545).

The spelling of 21223031020333 in words is "twenty-one trillion, two hundred twenty-three billion, thirty-one million, twenty thousand, three hundred thirty-three".