130212232421 has 4 divisors (see below), whose sum is σ = 132346859244. Its totient is φ = 128077605600.

The previous prime is 130212232291. The next prime is 130212232427. The reversal of 130212232421 is 124232212031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10296160900 + 119916071521 = 101470^2 + 346289^2 .

It is a cyclic number.

It is not a de Polignac number, because 130212232421 - 2³⁴ = 113032363237 is a prime.

It is a super-3 number, since 3×130212232421³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130212232427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067313320 + ... + 1067313441.

It is an arithmetic number, because the mean of its divisors is an integer number (33086714811).

Almost surely, 2^130212232421 is an apocalyptic number.

It is an amenable number.

130212232421 is a deficient number, since it is larger than the sum of its proper divisors (2134626823).

130212232421 is an equidigital number, since it uses as much as digits as its factorization.

130212232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134626822.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 130212232421 its reverse (124232212031), we get a palindrome (254444444452).

The spelling of 130212232421 in words is "one hundred thirty billion, two hundred twelve million, two hundred thirty-two thousand, four hundred twenty-one".