21233220110 has 16 divisors (see below), whose sum is σ = 38275767216. Its totient is φ = 8480850048.

The previous prime is 21233220077. The next prime is 21233220143. The reversal of 21233220110 is 1102233212.

It is an interprime number because it is at equal distance from previous prime (21233220077) and next prime (21233220143).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1547579 + ... + 1561238.

It is an arithmetic number, because the mean of its divisors is an integer number (2392235451).

Almost surely, 2^21233220110 is an apocalyptic number.

21233220110 is a deficient number, since it is larger than the sum of its proper divisors (17042547106).

21233220110 is a wasteful number, since it uses less digits than its factorization.

21233220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109507.

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

Adding to 21233220110 its reverse (1102233212), we get a palindrome (22335453322).

The spelling of 21233220110 in words is "twenty-one billion, two hundred thirty-three million, two hundred twenty thousand, one hundred ten".