21113220302 has 8 divisors (see below), whose sum is σ = 31786694112. Its totient is φ = 10517655600.

The previous prime is 21113220281. The next prime is 21113220319. The reversal of 21113220302 is 20302231112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 19476599 + ... + 19477682.

It is an arithmetic number, because the mean of its divisors is an integer number (3973336764).

Almost surely, 2^21113220302 is an apocalyptic number.

21113220302 is a deficient number, since it is larger than the sum of its proper divisors (10673473810).

21113220302 is a wasteful number, since it uses less digits than its factorization.

21113220302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38954554.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21113220302 its reverse (20302231112), we get a palindrome (41415451414).

The spelling of 21113220302 in words is "twenty-one billion, one hundred thirteen million, two hundred twenty thousand, three hundred two".