12220212120210 has 96 divisors (see below), whose sum is σ = 32088907654128. Its totient is φ = 3226280025600.

The previous prime is 12220212120187. The next prime is 12220212120227. The reversal of 12220212120210 is 1202121202221.

It is a happy number.

12220212120210 is a `hidden beast` number, since 1 + 2 + 220 + 21 + 212 + 0 + 210 = 666.

12220212120210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2079038120769 + 10141173999441 = 1441887^2 + 3184521^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280431984 + ... + 280475556.

Almost surely, 2^{12220212120210} is an apocalyptic number.

12220212120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12220212120210 is an abundant number, since it is smaller than the sum of its proper divisors (19868695533918).

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

12220212120210 is a wasteful number, since it uses less digits than its factorization.

12220212120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74540 (or 74537 counting only the distinct ones).

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

Adding to 12220212120210 its reverse (1202121202221), we get a palindrome (13422333322431).

The spelling of 12220212120210 in words is "twelve trillion, two hundred twenty billion, two hundred twelve million, one hundred twenty thousand, two hundred ten".