21222354264346 has 8 divisors (see below), whose sum is σ = 32017540249044. Its totient is φ = 10549840848000.

The previous prime is 21222354264343. The next prime is 21222354264407. The reversal of 21222354264346 is 64346245322212.

It can be written as a sum of positive squares in 2 ways, for example, as 17769302083225 + 3453052181121 = 4215365^2 + 1858239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21222354264296 and 21222354264305.

It is not an unprimeable number, because it can be changed into a prime (21222354264343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30668141655 + ... + 30668142346.

Almost surely, 2^{21222354264346} is an apocalyptic number.

21222354264346 is a deficient number, since it is larger than the sum of its proper divisors (10795185984698).

21222354264346 is a wasteful number, since it uses less digits than its factorization.

21222354264346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61336284176.

The product of its digits is 3317760, while the sum is 46.

Adding to 21222354264346 its reverse (64346245322212), we get a palindrome (85568599586558).

The spelling of 21222354264346 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred fifty-four million, two hundred sixty-four thousand, three hundred forty-six".