12222211020 has 48 divisors (see below), whose sum is σ = 34732981248. Its totient is φ = 3210609600.

The previous prime is 12222211019. The next prime is 12222211031. The reversal of 12222211020 is 2011222221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1516156 + ... + 1524195.

It is an arithmetic number, because the mean of its divisors is an integer number (723603776).

Almost surely, 2^12222211020 is an apocalyptic number.

12222211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222211020 is an abundant number, since it is smaller than the sum of its proper divisors (22510770228).

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

12222211020 is a wasteful number, since it uses less digits than its factorization.

12222211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040430 (or 3040428 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12222211020 its reverse (2011222221), we get a palindrome (14233433241).

The spelling of 12222211020 in words is "twelve billion, two hundred twenty-two million, two hundred eleven thousand, twenty".