21102119984 has 40 divisors (see below), whose sum is σ = 44672029200. Its totient is φ = 9576857600.

The previous prime is 21102119963. The next prime is 21102119993. The reversal of 21102119984 is 48991120112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19292 + ... + 206340.

It is an arithmetic number, because the mean of its divisors is an integer number (1116800730).

Almost surely, 2^21102119984 is an apocalyptic number.

It is an amenable number.

21102119984 is an abundant number, since it is smaller than the sum of its proper divisors (23569909216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102119984 is a wasteful number, since it uses less digits than its factorization.

21102119984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187709 (or 187703 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 21102119984 in words is "twenty-one billion, one hundred two million, one hundred nineteen thousand, nine hundred eighty-four".