21302103030 has 64 divisors (see below), whose sum is σ = 55422517248. Its totient is φ = 5208854400.

The previous prime is 21302103013. The next prime is 21302103071. The reversal of 21302103030 is 3030120312.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121974 + ... + 239753.

It is an arithmetic number, because the mean of its divisors is an integer number (865976832).

Almost surely, 2^21302103030 is an apocalyptic number.

21302103030 is an abundant number, since it is smaller than the sum of its proper divisors (34120414218).

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

21302103030 is a wasteful number, since it uses less digits than its factorization.

21302103030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361901.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21302103030 its reverse (3030120312), we get a palindrome (24332223342).

The spelling of 21302103030 in words is "twenty-one billion, three hundred two million, one hundred three thousand, thirty".