12100222020 has 48 divisors (see below), whose sum is σ = 33961169088. Its totient is φ = 3219054720.

The previous prime is 12100222019. The next prime is 12100222049. The reversal of 12100222020 is 2022200121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12100221987 and 12100222005.

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, 214254 + ... + 264773.

It is an arithmetic number, because the mean of its divisors is an integer number (707524356).

Almost surely, 2^12100222020 is an apocalyptic number.

12100222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100222020 is an abundant number, since it is smaller than the sum of its proper divisors (21860947068).

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

12100222020 is a wasteful number, since it uses less digits than its factorization.

12100222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479460 (or 479458 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12100222020 its reverse (2022200121), we get a palindrome (14122422141).

The spelling of 12100222020 in words is "twelve billion, one hundred million, two hundred twenty-two thousand, twenty".