21101640230 has 32 divisors (see below), whose sum is σ = 41960471040. Its totient is φ = 7576189920.

The previous prime is 21101640211. The next prime is 21101640233. The reversal of 21101640230 is 3204610112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101640233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1205444 + ... + 1222823.

It is an arithmetic number, because the mean of its divisors is an integer number (1311264720).

Almost surely, 2^21101640230 is an apocalyptic number.

21101640230 is a deficient number, since it is larger than the sum of its proper divisors (20858830810).

21101640230 is a wasteful number, since it uses less digits than its factorization.

21101640230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428364.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 21101640230 in words is "twenty-one billion, one hundred one million, six hundred forty thousand, two hundred thirty".