21220222312322 has 8 divisors (see below), whose sum is σ = 34724000147472. Its totient is φ = 9645555596500.

The previous prime is 21220222312291. The next prime is 21220222312327. The reversal of 21220222312322 is 22321322202212.

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 = 21220222312291 and 21220222312300.

It is not an unprimeable number, because it can be changed into a prime (21220222312327) 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, 482277779804 + ... + 482277779847.

It is an arithmetic number, because the mean of its divisors is an integer number (4340500018434).

Almost surely, 2^{21220222312322} is an apocalyptic number.

21220222312322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21220222312322 is a deficient number, since it is larger than the sum of its proper divisors (13503777835150).

21220222312322 is a wasteful number, since it uses less digits than its factorization.

21220222312322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964555559664.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21220222312322 its reverse (22321322202212), we get a palindrome (43541544514534).

It can be divided in two parts, 2122022 and 2312322, that added together give a palindrome (4434344).

The spelling of 21220222312322 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, three hundred twelve thousand, three hundred twenty-two".