21222233013 has 16 divisors (see below), whose sum is σ = 28448067200. Its totient is φ = 14072325696.

The previous prime is 21222233003. The next prime is 21222233113. The reversal of 21222233013 is 31033222212.

It is a happy number.

It is not a de Polignac number, because 21222233013 - 2⁵ = 21222232981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222233003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3314331 + ... + 3320727.

It is an arithmetic number, because the mean of its divisors is an integer number (1778004200).

Almost surely, 2^21222233013 is an apocalyptic number.

It is an amenable number.

21222233013 is a deficient number, since it is larger than the sum of its proper divisors (7225834187).

21222233013 is a wasteful number, since it uses less digits than its factorization.

21222233013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21222233013 its reverse (31033222212), we get a palindrome (52255455225).

The spelling of 21222233013 in words is "twenty-one billion, two hundred twenty-two million, two hundred thirty-three thousand, thirteen".