130321212123 has 4 divisors (see below), whose sum is σ = 173761616168. Its totient is φ = 86880808080.

The previous prime is 130321212121. The next prime is 130321212143. The reversal of 130321212123 is 321212123031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 130321212123 - 2¹ = 130321212121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130321212123.

It is not an unprimeable number, because it can be changed into a prime (130321212121) 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, 21720202018 + ... + 21720202023.

It is an arithmetic number, because the mean of its divisors is an integer number (43440404042).

Almost surely, 2^130321212123 is an apocalyptic number.

130321212123 is a deficient number, since it is larger than the sum of its proper divisors (43440404045).

130321212123 is an equidigital number, since it uses as much as digits as its factorization.

130321212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43440404044.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 130321212123 its reverse (321212123031), we get a palindrome (451533335154).

The spelling of 130321212123 in words is "one hundred thirty billion, three hundred twenty-one million, two hundred twelve thousand, one hundred twenty-three".