21201045110 has 144 divisors (see below), whose sum is σ = 46978898400. Its totient is φ = 6867286272.

The previous prime is 21201045091. The next prime is 21201045119. The reversal of 21201045110 is 1154010212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201045119) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 23069231 + ... + 23070149.

It is an arithmetic number, because the mean of its divisors is an integer number (326242350).

Almost surely, 2^21201045110 is an apocalyptic number.

21201045110 is an abundant number, since it is smaller than the sum of its proper divisors (25777853290).

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

21201045110 is a wasteful number, since it uses less digits than its factorization.

21201045110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 21201045110 its reverse (1154010212), we get a palindrome (22355055322).

The spelling of 21201045110 in words is "twenty-one billion, two hundred one million, forty-five thousand, one hundred ten".