12211212201320 has 64 divisors (see below), whose sum is σ = 30610698336000. Its totient is φ = 4345963329280.

The previous prime is 12211212201311. The next prime is 12211212201337. The reversal of 12211212201320 is 2310221211221.

It is a super-2 number, since 2×12211212201320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12211212201292 and 12211212201301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295221395 + ... + 295262754.

It is an arithmetic number, because the mean of its divisors is an integer number (478292161500).

Almost surely, 2^{12211212201320} is an apocalyptic number.

12211212201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211212201320 is an abundant number, since it is smaller than the sum of its proper divisors (18399486134680).

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

12211212201320 is a wasteful number, since it uses less digits than its factorization.

12211212201320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590484218 (or 590484214 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12211212201320 its reverse (2310221211221), we get a palindrome (14521433412541).

Subtracting from 12211212201320 its reverse (2310221211221), we obtain a palindrome (9900990990099).

The spelling of 12211212201320 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, two hundred one thousand, three hundred twenty".