21322430241 has 16 divisors (see below), whose sum is σ = 32685886464. Its totient is φ = 12111284304.

The previous prime is 21322430237. The next prime is 21322430321. The reversal of 21322430241 is 14203422312.

It is a happy number.

It is not a de Polignac number, because 21322430241 - 2² = 21322430237 is a prime.

It is a super-2 number, since 2×21322430241² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21322430201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3036475 + ... + 3043488.

It is an arithmetic number, because the mean of its divisors is an integer number (2042867904).

Almost surely, 2^21322430241 is an apocalyptic number.

21322430241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21322430241 is a deficient number, since it is larger than the sum of its proper divisors (11363456223).

21322430241 is a wasteful number, since it uses less digits than its factorization.

21322430241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080140.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21322430241 its reverse (14203422312), we get a palindrome (35525852553).

The spelling of 21322430241 in words is "twenty-one billion, three hundred twenty-two million, four hundred thirty thousand, two hundred forty-one".