21113003242 has 8 divisors (see below), whose sum is σ = 31976976096. Its totient is φ = 10454011212.

The previous prime is 21113003237. The next prime is 21113003299. The reversal of 21113003242 is 24230031112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51244948 + ... + 51245359.

It is an arithmetic number, because the mean of its divisors is an integer number (3997122012).

Almost surely, 2^21113003242 is an apocalyptic number.

21113003242 is a deficient number, since it is larger than the sum of its proper divisors (10863972854).

21113003242 is a wasteful number, since it uses less digits than its factorization.

21113003242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102490412.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21113003242 its reverse (24230031112), we get a palindrome (45343034354).

The spelling of 21113003242 in words is "twenty-one billion, one hundred thirteen million, three thousand, two hundred forty-two".