21114120004 has 48 divisors (see below), whose sum is σ = 38468860416. Its totient is φ = 10131264000.

The previous prime is 21114119981. The next prime is 21114120011. The reversal of 21114120004 is 40002141112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21114120004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10821229 + ... + 10823179.

It is an arithmetic number, because the mean of its divisors is an integer number (801434592).

Almost surely, 2^21114120004 is an apocalyptic number.

It is an amenable number.

21114120004 is a deficient number, since it is larger than the sum of its proper divisors (17354740412).

21114120004 is a wasteful number, since it uses less digits than its factorization.

21114120004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956 (or 2954 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21114120004 its reverse (40002141112), we get a palindrome (61116261116).

The spelling of 21114120004 in words is "twenty-one billion, one hundred fourteen million, one hundred twenty thousand, four".