12221122020210 has 48 divisors (see below), whose sum is σ = 31977305297496. Its totient is φ = 3238208123904.

The previous prime is 12221122020203. The next prime is 12221122020223. The reversal of 12221122020210 is 1202022112221.

It is a happy number.

12221122020210 is a `hidden beast` number, since 1 + 2 + 2 + 211 + 220 + 20 + 210 = 666.

12221122020210 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 4 ways, for example, as 10105589587041 + 2115532433169 = 3178929^2 + 1454487^2 .

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 23 ways as a sum of consecutive naturals, for example, 432438879 + ... + 432467138.

Almost surely, 2^{12221122020210} is an apocalyptic number.

12221122020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221122020210 is an abundant number, since it is smaller than the sum of its proper divisors (19756183277286).

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

12221122020210 is a wasteful number, since it uses less digits than its factorization.

12221122020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864906187 (or 864906184 counting only the distinct ones).

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

Adding to 12221122020210 its reverse (1202022112221), we get a palindrome (13423144132431).

The spelling of 12221122020210 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty thousand, two hundred ten".