21222223355463 has 96 divisors (see below), whose sum is σ = 32491886980608. Its totient is φ = 12289964544000.

The previous prime is 21222223355413. The next prime is 21222223355539. The reversal of 21222223355463 is 36455332222212.

It is not a de Polignac number, because 21222223355463 - 2²¹ = 21222221258311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222223355413) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 341321368 + ... + 341383538.

It is an arithmetic number, because the mean of its divisors is an integer number (338457156048).

Almost surely, 2^{21222223355463} is an apocalyptic number.

21222223355463 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21222223355463 is a deficient number, since it is larger than the sum of its proper divisors (11269663625145).

21222223355463 is a wasteful number, since it uses less digits than its factorization.

21222223355463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62697 (or 62684 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 42.

Adding to 21222223355463 its reverse (36455332222212), we get a palindrome (57677555577675).

The spelling of 21222223355463 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-three million, three hundred fifty-five thousand, four hundred sixty-three".