21133122324 has 144 divisors (see below), whose sum is σ = 54082828800. Its totient is φ = 6404614272.

The previous prime is 21133122319. The next prime is 21133122337. The reversal of 21133122324 is 42322133112.

It is a super-2 number, since 2×21133122324² (a number of 21 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 = 21133122294 and 21133122303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58866457 + ... + 58866815.

It is an arithmetic number, because the mean of its divisors is an integer number (375575200).

Almost surely, 2^21133122324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21133122324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27041414400).

21133122324 is an abundant number, since it is smaller than the sum of its proper divisors (32949706476).

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

21133122324 is a wasteful number, since it uses less digits than its factorization.

21133122324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 719 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 21133122324 its reverse (42322133112), we get a palindrome (63455255436).

The spelling of 21133122324 in words is "twenty-one billion, one hundred thirty-three million, one hundred twenty-two thousand, three hundred twenty-four".