12700634421 has 4 divisors (see below), whose sum is σ = 16934179232. Its totient is φ = 8467089612.

The previous prime is 12700634407. The next prime is 12700634473. The reversal of 12700634421 is 12443600721.

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 not a de Polignac number, because 12700634421 - 2⁶ = 12700634357 is a prime.

It is a super-2 number, since 2×12700634421² (a number of 21 digits) contains 22 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 (12700634321) 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, 2116772401 + ... + 2116772406.

It is an arithmetic number, because the mean of its divisors is an integer number (4233544808).

Almost surely, 2^12700634421 is an apocalyptic number.

It is an amenable number.

12700634421 is a deficient number, since it is larger than the sum of its proper divisors (4233544811).

12700634421 is an equidigital number, since it uses as much as digits as its factorization.

12700634421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233544810.

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 12700634421 in words is "twelve billion, seven hundred million, six hundred thirty-four thousand, four hundred twenty-one".