12211201322220 has 48 divisors (see below), whose sum is σ = 34216266601440. Its totient is φ = 3253948647936.

The previous prime is 12211201322197. The next prime is 12211201322233. The reversal of 12211201322220 is 2222310211221.

It is a super-2 number, since 2×12211201322220² (a number of 27 digits) contains 22 as substring.

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, 74032705 + ... + 74197464.

It is an arithmetic number, because the mean of its divisors is an integer number (712838887530).

Almost surely, 2^{12211201322220} is an apocalyptic number.

12211201322220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211201322220 is an abundant number, since it is smaller than the sum of its proper divisors (22005065279220).

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

12211201322220 is a wasteful number, since it uses less digits than its factorization.

12211201322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148231554 (or 148231552 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12211201322220 its reverse (2222310211221), we get a palindrome (14433511533441).

The spelling of 12211201322220 in words is "twelve trillion, two hundred eleven billion, two hundred one million, three hundred twenty-two thousand, two hundred twenty".