21322302424 has 32 divisors (see below), whose sum is σ = 40117638240. Its totient is φ = 10624320000.

The previous prime is 21322302409. The next prime is 21322302427. The reversal of 21322302424 is 42420322312.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322302427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4177474 + ... + 4182574.

It is an arithmetic number, because the mean of its divisors is an integer number (1253676195).

Almost surely, 2^21322302424 is an apocalyptic number.

It is an amenable number.

21322302424 is a deficient number, since it is larger than the sum of its proper divisors (18795335816).

21322302424 is a wasteful number, since it uses less digits than its factorization.

21322302424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811 (or 6807 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21322302424 its reverse (42420322312), we get a palindrome (63742624736).

The spelling of 21322302424 in words is "twenty-one billion, three hundred twenty-two million, three hundred two thousand, four hundred twenty-four".