12220121022210 has 24 divisors (see below), whose sum is σ = 31772314657980. Its totient is φ = 3258698939232.

The previous prime is 12220121022121. The next prime is 12220121022253. The reversal of 12220121022210 is 1222012102221.

It is a happy number.

12220121022210 is a `hidden beast` number, since 1 + 2 + 220 + 1 + 210 + 22 + 210 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11547063221409 + 673057800801 = 3398097^2 + 820401^2 .

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 11 ways as a sum of consecutive naturals, for example, 67889561145 + ... + 67889561324.

Almost surely, 2^{12220121022210} is an apocalyptic number.

12220121022210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12220121022210 is an abundant number, since it is smaller than the sum of its proper divisors (19552193635770).

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

12220121022210 is a wasteful number, since it uses less digits than its factorization.

12220121022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135779122482 (or 135779122479 counting only the distinct ones).

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

Adding to 12220121022210 its reverse (1222012102221), we get a palindrome (13442133124431).

The spelling of 12220121022210 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, twenty-two thousand, two hundred ten".