12212222110220 has 48 divisors (see below), whose sum is σ = 27986346920448. Its totient is φ = 4439338791360.

The previous prime is 12212222110217. The next prime is 12212222110331. The reversal of 12212222110220 is 2201122221221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12212222110192 and 12212222110201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8516234 + ... + 9846353.

It is an arithmetic number, because the mean of its divisors is an integer number (583048894176).

Almost surely, 2^{12212222110220} is an apocalyptic number.

12212222110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212222110220 is an abundant number, since it is smaller than the sum of its proper divisors (15774124810228).

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

12212222110220 is a wasteful number, since it uses less digits than its factorization.

12212222110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18365630 (or 18365628 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12212222110220 its reverse (2201122221221), we get a palindrome (14413344331441).

The spelling of 12212222110220 in words is "twelve trillion, two hundred twelve billion, two hundred twenty-two million, one hundred ten thousand, two hundred twenty".