21888100930 has 32 divisors (see below), whose sum is σ = 39512188800. Its totient is φ = 8730034560.

The previous prime is 21888100889. The next prime is 21888100931. The reversal of 21888100930 is 3900188812.

It is not an unprimeable number, because it can be changed into a prime (21888100931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6569365 + ... + 6572695.

It is an arithmetic number, because the mean of its divisors is an integer number (1234755900).

Almost surely, 2^21888100930 is an apocalyptic number.

21888100930 is a deficient number, since it is larger than the sum of its proper divisors (17624087870).

21888100930 is a wasteful number, since it uses less digits than its factorization.

21888100930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034.

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 21888100930 in words is "twenty-one billion, eight hundred eighty-eight million, one hundred thousand, nine hundred thirty".