21022233013 has 4 divisors (see below), whose sum is σ = 21936243168. Its totient is φ = 20108222860.

The previous prime is 21022232993. The next prime is 21022233041. The reversal of 21022233013 is 31033222012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21022233013 - 2¹⁷ = 21022101941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022233083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457005043 + ... + 457005088.

It is an arithmetic number, because the mean of its divisors is an integer number (5484060792).

Almost surely, 2^21022233013 is an apocalyptic number.

21022233013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21022233013 is a deficient number, since it is larger than the sum of its proper divisors (914010155).

21022233013 is an equidigital number, since it uses as much as digits as its factorization.

21022233013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914010154.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21022233013 its reverse (31033222012), we get a palindrome (52055455025).

The spelling of 21022233013 in words is "twenty-one billion, twenty-two million, two hundred thirty-three thousand, thirteen".