21310003110 has 128 divisors (see below), whose sum is σ = 57514572288. Its totient is φ = 5007744000.

The previous prime is 21310003069. The next prime is 21310003133. The reversal of 21310003110 is 1130001312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3427905 + ... + 3434115.

It is an arithmetic number, because the mean of its divisors is an integer number (449332596).

Almost surely, 2^21310003110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21310003110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28757286144).

21310003110 is an abundant number, since it is smaller than the sum of its proper divisors (36204569178).

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

21310003110 is a wasteful number, since it uses less digits than its factorization.

21310003110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6550.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21310003110 its reverse (1130001312), we get a palindrome (22440004422).

The spelling of 21310003110 in words is "twenty-one billion, three hundred ten million, three thousand, one hundred ten".