12211212210120 has 768 divisors, whose sum is σ = 52105068288000. Its totient is φ = 2402846208000.

The previous prime is 12211212210107. The next prime is 12211212210133. The reversal of 12211212210120 is 2101221211221.

12211212210120 is a `hidden beast` number, since 1 + 221 + 1 + 212 + 210 + 1 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (12211212210107) and next prime (12211212210133).

It is a super-2 number, since 2×12211212210120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12211212210093 and 12211212210102.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2344250076 + ... + 2344255284.

It is an arithmetic number, because the mean of its divisors is an integer number (67845141000).

Almost surely, 2^{12211212210120} is an apocalyptic number.

12211212210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211212210120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26052534144000).

12211212210120 is an abundant number, since it is smaller than the sum of its proper divisors (39893856077880).

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

12211212210120 is a wasteful number, since it uses less digits than its factorization.

12211212210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9714 (or 9707 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12211212210120 its reverse (2101221211221), we get a palindrome (14312433421341).

The spelling of 12211212210120 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, two hundred ten thousand, one hundred twenty".