21220033411 has 2 divisors, whose sum is σ = 21220033412. Its totient is φ = 21220033410.

The previous prime is 21220033363. The next prime is 21220033447. The reversal of 21220033411 is 11433002212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220033411 - 2²⁹ = 20683162499 is a prime.

It is not a weakly prime, because it can be changed into another prime (21220037411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610016705 + 10610016706.

It is an arithmetic number, because the mean of its divisors is an integer number (10610016706).

Almost surely, 2^21220033411 is an apocalyptic number.

21220033411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220033411 is an equidigital number, since it uses as much as digits as its factorization.

21220033411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21220033411 its reverse (11433002212), we get a palindrome (32653035623).

The spelling of 21220033411 in words is "twenty-one billion, two hundred twenty million, thirty-three thousand, four hundred eleven".