21022341152 has 90 divisors (see below), whose sum is σ = 44311011759. Its totient is φ = 9817698240.

The previous prime is 21022341127. The next prime is 21022341157. The reversal of 21022341152 is 25114322012.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 10511170576 + 10511170576 = 102524^2 + 102524^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=102524.

It is a super-2 number, since 2×21022341152² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022341157) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 296089277 + ... + 296089347.

Almost surely, 2^21022341152 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 21022341152

21022341152 is an abundant number, since it is smaller than the sum of its proper divisors (23288670607).

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

21022341152 is an frugal number, since it uses more digits than its factorization.

21022341152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 21022341152 its reverse (25114322012), we get a palindrome (46136663164).

The spelling of 21022341152 in words is "twenty-one billion, twenty-two million, three hundred forty-one thousand, one hundred fifty-two".