130000213421 has 4 divisors (see below), whose sum is σ = 140000229852. Its totient is φ = 120000196992.

The previous prime is 130000213403. The next prime is 130000213423. The reversal of 130000213421 is 124312000031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124312000031 = 7681 ⋅16184351.

It can be written as a sum of positive squares in 2 ways, for example, as 5489328100 + 124510885321 = 74090^2 + 352861^2 .

It is a de Polignac number, because none of the positive numbers 2^k-130000213421 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 130000213421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130000213423) 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, 5000008196 + ... + 5000008221.

It is an arithmetic number, because the mean of its divisors is an integer number (35000057463).

Almost surely, 2^130000213421 is an apocalyptic number.

It is an amenable number.

130000213421 is a deficient number, since it is larger than the sum of its proper divisors (10000016431).

130000213421 is a wasteful number, since it uses less digits than its factorization.

130000213421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000016430.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 130000213421 its reverse (124312000031), we get a palindrome (254312213452).

The spelling of 130000213421 in words is "one hundred thirty billion, two hundred thirteen thousand, four hundred twenty-one".