21113983350 has 72 divisors (see below), whose sum is σ = 56750798520. Its totient is φ = 5627957760.

The previous prime is 21113983349. The next prime is 21113983351. The reversal of 21113983350 is 5338931112.

21113983350 is a `hidden beast` number, since 211 + 1 + 3 + 98 + 3 + 350 = 666.

21113983350 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (21113983349) and next prime (21113983351).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113983351) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1186821 + ... + 1204479.

It is an arithmetic number, because the mean of its divisors is an integer number (788205535).

Almost surely, 2^21113983350 is an apocalyptic number.

21113983350 is an abundant number, since it is smaller than the sum of its proper divisors (35636815170).

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

21113983350 is a wasteful number, since it uses less digits than its factorization.

21113983350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20334 (or 20326 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 21113983350 in words is "twenty-one billion, one hundred thirteen million, nine hundred eighty-three thousand, three hundred fifty".