12211112122120 has 32 divisors (see below), whose sum is σ = 27486541759320. Its totient is φ = 4882393384960.

The previous prime is 12211112122093. The next prime is 12211112122133. The reversal of 12211112122120 is 2122121111221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2702387483236 + 9508724638884 = 1643894^2 + 3083622^2 .

It is a super-2 number, since 2×12211112122120² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64011817 + ... + 64202296.

Almost surely, 2^{12211112122120} is an apocalyptic number.

12211112122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211112122120 is an abundant number, since it is smaller than the sum of its proper divisors (15275429637200).

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

12211112122120 is a wasteful number, since it uses less digits than its factorization.

12211112122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128216505 (or 128216501 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12211112122120 its reverse (2122121111221), we get a palindrome (14333233233341).

The spelling of 12211112122120 in words is "twelve trillion, two hundred eleven billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twenty".