12340894421 has 16 divisors (see below), whose sum is σ = 13594224000. Its totient is φ = 11150872128.

The previous prime is 12340894417. The next prime is 12340894429. The reversal of 12340894421 is 12449804321.

It is a cyclic number.

It is not a de Polignac number, because 12340894421 - 2² = 12340894417 is a prime.

It is a super-2 number, since 2×12340894421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340894429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112055 + ... + 192971.

It is an arithmetic number, because the mean of its divisors is an integer number (849639000).

Almost surely, 2^12340894421 is an apocalyptic number.

It is an amenable number.

12340894421 is a deficient number, since it is larger than the sum of its proper divisors (1253329579).

12340894421 is a wasteful number, since it uses less digits than its factorization.

12340894421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81308.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 12340894421 in words is "twelve billion, three hundred forty million, eight hundred ninety-four thousand, four hundred twenty-one".