21242141330 has 16 divisors (see below), whose sum is σ = 38335693824. Its totient is φ = 8474670000.

The previous prime is 21242141311. The next prime is 21242141339. The reversal of 21242141330 is 3314124212.

It is a junction number, because it is equal to n+sod(n) for n = 21242141296 and 21242141305.

It is not an unprimeable number, because it can be changed into a prime (21242141339) 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, 2769296 + ... + 2776955.

It is an arithmetic number, because the mean of its divisors is an integer number (2395980864).

Almost surely, 2^21242141330 is an apocalyptic number.

21242141330 is a deficient number, since it is larger than the sum of its proper divisors (17093552494).

21242141330 is a wasteful number, since it uses less digits than its factorization.

21242141330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546641.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21242141330 its reverse (3314124212), we get a palindrome (24556265542).

The spelling of 21242141330 in words is "twenty-one billion, two hundred forty-two million, one hundred forty-one thousand, three hundred thirty".