12122212020 has 48 divisors (see below), whose sum is σ = 33947088000. Its totient is φ = 3232123776.

The previous prime is 12122211991. The next prime is 12122212033. The reversal of 12122212020 is 2021222121.

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

It is a congruent number.

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, 674106 + ... + 691854.

It is an arithmetic number, because the mean of its divisors is an integer number (707231000).

Almost surely, 2^12122212020 is an apocalyptic number.

12122212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122212020 is an abundant number, since it is smaller than the sum of its proper divisors (21824875980).

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

12122212020 is a wasteful number, since it uses less digits than its factorization.

12122212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29144 (or 29142 counting only the distinct ones).

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

Adding to 12122212020 its reverse (2021222121), we get a palindrome (14143434141).

The spelling of 12122212020 in words is "twelve billion, one hundred twenty-two million, two hundred twelve thousand, twenty".