21302023110 has 32 divisors (see below), whose sum is σ = 51129174240. Its totient is φ = 5680059648.

The previous prime is 21302023079. The next prime is 21302023121. The reversal of 21302023110 is 1132020312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21302023110.

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 15 ways as a sum of consecutive naturals, for example, 464994 + ... + 508746.

It is an arithmetic number, because the mean of its divisors is an integer number (1597786695).

Almost surely, 2^21302023110 is an apocalyptic number.

21302023110 is an abundant number, since it is smaller than the sum of its proper divisors (29827151130).

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

21302023110 is a wasteful number, since it uses less digits than its factorization.

21302023110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59992.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21302023110 its reverse (1132020312), we get a palindrome (22434043422).

It can be divided in two parts, 2130202 and 3110, that added together give a palindrome (2133312).

The spelling of 21302023110 in words is "twenty-one billion, three hundred two million, twenty-three thousand, one hundred ten".