21302121110 has 8 divisors (see below), whose sum is σ = 38343818016. Its totient is φ = 8520848440.

The previous prime is 21302121109. The next prime is 21302121121. The reversal of 21302121110 is 1112120312.

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

It is a Curzon number.

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, 1065106046 + ... + 1065106065.

It is an arithmetic number, because the mean of its divisors is an integer number (4792977252).

Almost surely, 2^21302121110 is an apocalyptic number.

21302121110 is a deficient number, since it is larger than the sum of its proper divisors (17041696906).

21302121110 is a wasteful number, since it uses less digits than its factorization.

21302121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130212118.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21302121110 its reverse (1112120312), we get a palindrome (22414241422).

The spelling of 21302121110 in words is "twenty-one billion, three hundred two million, one hundred twenty-one thousand, one hundred ten".