12520431422 has 8 divisors (see below), whose sum is σ = 19885391136. Its totient is φ = 5891967712.

The previous prime is 12520431419. The next prime is 12520431431. The reversal of 12520431422 is 22413402521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12520431422² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12520431391 and 12520431400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184123958 + ... + 184124025.

It is an arithmetic number, because the mean of its divisors is an integer number (2485673892).

Almost surely, 2^12520431422 is an apocalyptic number.

12520431422 is a deficient number, since it is larger than the sum of its proper divisors (7364959714).

12520431422 is a wasteful number, since it uses less digits than its factorization.

12520431422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368248002.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 12520431422 its reverse (22413402521), we get a palindrome (34933833943).

The spelling of 12520431422 in words is "twelve billion, five hundred twenty million, four hundred thirty-one thousand, four hundred twenty-two".