21223330152 has 32 divisors (see below), whose sum is σ = 54187228800. Its totient is φ = 6923922944.

The previous prime is 21223330151. The next prime is 21223330169. The reversal of 21223330152 is 25103332212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21223330151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9406377 + ... + 9408632.

It is an arithmetic number, because the mean of its divisors is an integer number (1693350900).

Almost surely, 2^21223330152 is an apocalyptic number.

It is an amenable number.

21223330152 is an abundant number, since it is smaller than the sum of its proper divisors (32963898648).

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

21223330152 is a wasteful number, since it uses less digits than its factorization.

21223330152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18815065 (or 18815061 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 21223330152 its reverse (25103332212), we get a palindrome (46326662364).

The spelling of 21223330152 in words is "twenty-one billion, two hundred twenty-three million, three hundred thirty thousand, one hundred fifty-two".