12221023331408 has 20 divisors (see below), whose sum is σ = 24707721083808. Its totient is φ = 5844837245280.

The previous prime is 12221023331401. The next prime is 12221023331459. The reversal of 12221023331408 is 80413332012221.

It is a super-2 number, since 2×12221023331408² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221023331401) 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, 16604650898 + ... + 16604651633.

Almost surely, 2^{12221023331408} is an apocalyptic number.

It is an amenable number.

12221023331408 is an abundant number, since it is smaller than the sum of its proper divisors (12486697752400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12221023331408 is a wasteful number, since it uses less digits than its factorization.

12221023331408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33209302562 (or 33209302556 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 12221023331408 its reverse (80413332012221), we get a palindrome (92634355343629).

The spelling of 12221023331408 in words is "twelve trillion, two hundred twenty-one billion, twenty-three million, three hundred thirty-one thousand, four hundred eight".