21222223346332 has 48 divisors (see below), whose sum is σ = 41181385573440. Its totient is φ = 9518227817472.

The previous prime is 21222223346297. The next prime is 21222223346333. The reversal of 21222223346332 is 23364332222212.

It is a junction number, because it is equal to n+sod(n) for n = 21222223346291 and 21222223346300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222223346333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24059907 + ... + 24926362.

It is an arithmetic number, because the mean of its divisors is an integer number (857945532780).

Almost surely, 2^{21222223346332} is an apocalyptic number.

It is an amenable number.

21222223346332 is a deficient number, since it is larger than the sum of its proper divisors (19959162227108).

21222223346332 is a wasteful number, since it uses less digits than its factorization.

21222223346332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48986590 (or 48986588 counting only the distinct ones).

The product of its digits is 248832, while the sum is 37.

Adding to 21222223346332 its reverse (23364332222212), we get a palindrome (44586555568544).

The spelling of 21222223346332 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-three million, three hundred forty-six thousand, three hundred thirty-two".