21303120130 has 16 divisors (see below), whose sum is σ = 38352255480. Its totient is φ = 8519772672.

The previous prime is 21303120089. The next prime is 21303120133. The reversal of 21303120130 is 3102130312.

It can be written as a sum of positive squares in 4 ways, for example, as 9310899049 + 11992221081 = 96493^2 + 109509^2 .

It is a super-2 number, since 2×21303120130² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21303120133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122799 + ... + 240178.

Almost surely, 2^21303120130 is an apocalyptic number.

21303120130 is a deficient number, since it is larger than the sum of its proper divisors (17049135350).

21303120130 is a wasteful number, since it uses less digits than its factorization.

21303120130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368853.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21303120130 its reverse (3102130312), we get a palindrome (24405250442).

The spelling of 21303120130 in words is "twenty-one billion, three hundred three million, one hundred twenty thousand, one hundred thirty".