21302220110 has 8 divisors (see below), whose sum is σ = 38343996216. Its totient is φ = 8520888040.

The previous prime is 21302220041. The next prime is 21302220143. The reversal of 21302220110 is 1102220312.

It is a happy number.

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

It is a super-2 number, since 2×21302220110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065110996 + ... + 1065111015.

It is an arithmetic number, because the mean of its divisors is an integer number (4792999527).

Almost surely, 2^21302220110 is an apocalyptic number.

21302220110 is a deficient number, since it is larger than the sum of its proper divisors (17041776106).

21302220110 is a wasteful number, since it uses less digits than its factorization.

21302220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130222018.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21302220110 its reverse (1102220312), we get a palindrome (22404440422).

The spelling of 21302220110 in words is "twenty-one billion, three hundred two million, two hundred twenty thousand, one hundred ten".