12220122021210 has 48 divisors (see below), whose sum is σ = 33641277097896. Its totient is φ = 3067011016704.

The previous prime is 12220122021203. The next prime is 12220122021251. The reversal of 12220122021210 is 1212022102221.

It is a happy number.

12220122021210 is a `hidden beast` number, since 1 + 2 + 220 + 1 + 220 + 212 + 10 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12038075585649 + 182046435561 = 3469593^2 + 426669^2 .

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

It is a Curzon number.

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, 3993502399 + ... + 3993505458.

Almost surely, 2^{12220122021210} is an apocalyptic number.

12220122021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12220122021210 is an abundant number, since it is smaller than the sum of its proper divisors (21421155076686).

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

12220122021210 is a wasteful number, since it uses less digits than its factorization.

12220122021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7987007887 (or 7987007884 counting only the distinct ones).

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

Adding to 12220122021210 its reverse (1212022102221), we get a palindrome (13432144123431).

The spelling of 12220122021210 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-two million, twenty-one thousand, two hundred ten".