12220011220212 has 30 divisors (see below), whose sum is σ = 31945523159858. Its totient is φ = 4073337073296.

The previous prime is 12220011220147. The next prime is 12220011220213. The reversal of 12220011220212 is 21202211002221.

It is a happy number.

12220011220212 is a `hidden beast` number, since 1 + 2 + 220 + 0 + 11 + 220 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9133475242896 + 3086535977316 = 3022164^2 + 1756854^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220011220213) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 18858041683 + ... + 18858042330.

Almost surely, 2^{12220011220212} is an apocalyptic number.

12220011220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12220011220212 is an abundant number, since it is smaller than the sum of its proper divisors (19725511939646).

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

12220011220212 is a wasteful number, since it uses less digits than its factorization.

12220011220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37716084029 (or 37716084018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12220011220212 its reverse (21202211002221), we get a palindrome (33422222222433).

The spelling of 12220011220212 in words is "twelve trillion, two hundred twenty billion, eleven million, two hundred twenty thousand, two hundred twelve".