130103210021 has 4 divisors (see below), whose sum is σ = 133128866112. Its totient is φ = 127077553932.

The previous prime is 130103210009. The next prime is 130103210047. The reversal of 130103210021 is 120012301031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130103210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130103209978 and 130103210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130103210071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512827981 + ... + 1512828066.

It is an arithmetic number, because the mean of its divisors is an integer number (33282216528).

Almost surely, 2^130103210021 is an apocalyptic number.

It is an amenable number.

130103210021 is a deficient number, since it is larger than the sum of its proper divisors (3025656091).

130103210021 is an equidigital number, since it uses as much as digits as its factorization.

130103210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025656090.

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

Adding to 130103210021 its reverse (120012301031), we get a palindrome (250115511052).

The spelling of 130103210021 in words is "one hundred thirty billion, one hundred three million, two hundred ten thousand, twenty-one".