21221124244332 has 12 divisors (see below), whose sum is σ = 49515956570136. Its totient is φ = 7073708081440.

The previous prime is 21221124244213. The next prime is 21221124244381. The reversal of 21221124244332 is 23344242112212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×21221124244332² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21221124244293 and 21221124244302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884213510169 + ... + 884213510192.

It is an arithmetic number, because the mean of its divisors is an integer number (4126329714178).

Almost surely, 2^{21221124244332} is an apocalyptic number.

It is an amenable number.

21221124244332 is an abundant number, since it is smaller than the sum of its proper divisors (28294832325804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21221124244332 is a wasteful number, since it uses less digits than its factorization.

21221124244332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768427020368 (or 1768427020366 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

Adding to 21221124244332 its reverse (23344242112212), we get a palindrome (44565366356544).

The spelling of 21221124244332 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty-four million, two hundred forty-four thousand, three hundred thirty-two".