21130130120 has 32 divisors (see below), whose sum is σ = 51864865920. Its totient is φ = 7683683520.

The previous prime is 21130130111. The next prime is 21130130129. The reversal of 21130130120 is 2103103112.

It is an interprime number because it is at equal distance from previous prime (21130130111) and next prime (21130130129).

It is a junction number, because it is equal to n+sod(n) for n = 21130130095 and 21130130104.

It is not an unprimeable number, because it can be changed into a prime (21130130129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24011072 + ... + 24011951.

It is an arithmetic number, because the mean of its divisors is an integer number (1620777060).

Almost surely, 2^21130130120 is an apocalyptic number.

21130130120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21130130120 is an abundant number, since it is smaller than the sum of its proper divisors (30734735800).

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

21130130120 is a wasteful number, since it uses less digits than its factorization.

21130130120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48023045 (or 48023041 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21130130120 its reverse (2103103112), we get a palindrome (23233233232).

The spelling of 21130130120 in words is "twenty-one billion, one hundred thirty million, one hundred thirty thousand, one hundred twenty".