21034103120 has 20 divisors (see below), whose sum is σ = 48904289940. Its totient is φ = 8413641216.

The previous prime is 21034103119. The next prime is 21034103141. The reversal of 21034103120 is 2130143012.

It can be written as a sum of positive squares in 2 ways, for example, as 16818977344 + 4215125776 = 129688^2 + 64924^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131463065 + ... + 131463224.

It is an arithmetic number, because the mean of its divisors is an integer number (2445214497).

Almost surely, 2^21034103120 is an apocalyptic number.

21034103120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21034103120 is an abundant number, since it is smaller than the sum of its proper divisors (27870186820).

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

21034103120 is a wasteful number, since it uses less digits than its factorization.

21034103120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262926302 (or 262926296 counting only the distinct ones).

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

Adding to 21034103120 its reverse (2130143012), we get a palindrome (23164246132).

The spelling of 21034103120 in words is "twenty-one billion, thirty-four million, one hundred three thousand, one hundred twenty".