21222835351 has 2 divisors, whose sum is σ = 21222835352. Its totient is φ = 21222835350.

The previous prime is 21222835339. The next prime is 21222835369. The reversal of 21222835351 is 15353822212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21222835351 - 2⁷ = 21222835223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222835451) 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 as a sum of consecutive naturals, namely, 10611417675 + 10611417676.

It is an arithmetic number, because the mean of its divisors is an integer number (10611417676).

Almost surely, 2^21222835351 is an apocalyptic number.

21222835351 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222835351 is an equidigital number, since it uses as much as digits as its factorization.

21222835351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The spelling of 21222835351 in words is "twenty-one billion, two hundred twenty-two million, eight hundred thirty-five thousand, three hundred fifty-one".