12696822535421 has 8 divisors (see below), whose sum is σ = 12924072594720. Its totient is φ = 12471340959472.

The previous prime is 12696822535417. The next prime is 12696822535447. The reversal of 12696822535421 is 12453522869621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12696822535421 - 2² = 12696822535417 is a prime.

It is a super-2 number, since 2×12696822535421² (a number of 27 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 (12696822535021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442106351 + ... + 442135068.

It is an arithmetic number, because the mean of its divisors is an integer number (1615509074340).

Almost surely, 2^{12696822535421} is an apocalyptic number.

It is an amenable number.

12696822535421 is a deficient number, since it is larger than the sum of its proper divisors (227250059299).

12696822535421 is an equidigital number, since it uses as much as digits as its factorization.

12696822535421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884241675.

The product of its digits is 12441600, while the sum is 56.

The spelling of 12696822535421 in words is "twelve trillion, six hundred ninety-six billion, eight hundred twenty-two million, five hundred thirty-five thousand, four hundred twenty-one".