12210101000020 has 144 divisors (see below), whose sum is σ = 32233969563264. Its totient is φ = 3802966675200.

The previous prime is 12210100999979. The next prime is 12210101000033. The reversal of 12210101000020 is 2000010101221.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12210100999970 and 12210101000006.

It is a congruent number.

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, 22996135 + ... + 23521105.

It is an arithmetic number, because the mean of its divisors is an integer number (223847010856).

Almost surely, 2^{12210101000020} is an apocalyptic number.

12210101000020 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 12210101000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16116984781632).

12210101000020 is an abundant number, since it is smaller than the sum of its proper divisors (20023868563244).

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

12210101000020 is a wasteful number, since it uses less digits than its factorization.

12210101000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526382 (or 526369 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12210101000020 its reverse (2000010101221), we get a palindrome (14210111101241).

The spelling of 12210101000020 in words is "twelve trillion, two hundred ten billion, one hundred one million, twenty", and thus it is an aban number.