21112884146 has 8 divisors (see below), whose sum is σ = 32206094640. Its totient is φ = 10377519268.

The previous prime is 21112884119. The next prime is 21112884203. The reversal of 21112884146 is 64148821112.

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, 89461256 + ... + 89461491.

It is an arithmetic number, because the mean of its divisors is an integer number (4025761830).

Almost surely, 2^21112884146 is an apocalyptic number.

21112884146 is a deficient number, since it is larger than the sum of its proper divisors (11093210494).

21112884146 is a wasteful number, since it uses less digits than its factorization.

21112884146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178922808.

The product of its digits is 24576, while the sum is 38.

The spelling of 21112884146 in words is "twenty-one billion, one hundred twelve million, eight hundred eighty-four thousand, one hundred forty-six".