21233122110 has 40 divisors (see below), whose sum is σ = 57093508296. Its totient is φ = 5662165680.

The previous prime is 21233122103. The next prime is 21233122121. The reversal of 21233122110 is 1122133212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13106056 + ... + 13107675.

Almost surely, 2^21233122110 is an apocalyptic number.

21233122110 is an abundant number, since it is smaller than the sum of its proper divisors (35860386186).

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

21233122110 is a wasteful number, since it uses less digits than its factorization.

21233122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26213750 (or 26213741 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21233122110 its reverse (1122133212), we get a palindrome (22355255322).

The spelling of 21233122110 in words is "twenty-one billion, two hundred thirty-three million, one hundred twenty-two thousand, one hundred ten".