12221031313320 has 64 divisors (see below), whose sum is σ = 36690890544000. Its totient is φ = 3256470874368.

The previous prime is 12221031313313. The next prime is 12221031313411. The reversal of 12221031313320 is 2331313012221.

It is a super-2 number, since 2×12221031313320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38447455 + ... + 38764014.

It is an arithmetic number, because the mean of its divisors is an integer number (573295164750).

Almost surely, 2^{12221031313320} is an apocalyptic number.

12221031313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221031313320 is an abundant number, since it is smaller than the sum of its proper divisors (24469859230680).

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

12221031313320 is a wasteful number, since it uses less digits than its factorization.

12221031313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77212802 (or 77212798 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 12221031313320 its reverse (2331313012221), we get a palindrome (14552344325541).

The spelling of 12221031313320 in words is "twelve trillion, two hundred twenty-one billion, thirty-one million, three hundred thirteen thousand, three hundred twenty".