12222101021020 has 96 divisors (see below), whose sum is σ = 28468412280000. Its totient is φ = 4370054707200.

The previous prime is 12222101021017. The next prime is 12222101021047. The reversal of 12222101021020 is 2012010122221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12222101020985 and 12222101021003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39690606 + ... + 39997354.

It is an arithmetic number, because the mean of its divisors is an integer number (296545961250).

Almost surely, 2^{12222101021020} is an apocalyptic number.

12222101021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12222101021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14234206140000).

12222101021020 is an abundant number, since it is smaller than the sum of its proper divisors (16246311258980).

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

12222101021020 is a wasteful number, since it uses less digits than its factorization.

12222101021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309799 (or 309797 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222101021020 its reverse (2012010122221), we get a palindrome (14234111143241).

The spelling of 12222101021020 in words is "twelve trillion, two hundred twenty-two billion, one hundred one million, twenty-one thousand, twenty".