21301034242 has 16 divisors (see below), whose sum is σ = 32047238592. Its totient is φ = 10618670160.

The previous prime is 21301034203. The next prime is 21301034243. The reversal of 21301034242 is 24243010312.

It is a super-3 number, since 3×21301034242³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21301034243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913533 + ... + 936559.

It is an arithmetic number, because the mean of its divisors is an integer number (2002952412).

Almost surely, 2^21301034242 is an apocalyptic number.

21301034242 is a deficient number, since it is larger than the sum of its proper divisors (10746204350).

21301034242 is a wasteful number, since it uses less digits than its factorization.

21301034242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24393.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21301034242 its reverse (24243010312), we get a palindrome (45544044554).

The spelling of 21301034242 in words is "twenty-one billion, three hundred one million, thirty-four thousand, two hundred forty-two".