12122021120 has 72 divisors (see below), whose sum is σ = 31675704480. Its totient is φ = 4408002560.

The previous prime is 12122021117. The next prime is 12122021129. The reversal of 12122021120 is 2112022121.

It is a junction number, because it is equal to n+sod(n) for n = 12122021095 and 12122021104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122021129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416390 + ... + 444549.

It is an arithmetic number, because the mean of its divisors is an integer number (439940340).

Almost surely, 2^12122021120 is an apocalyptic number.

12122021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122021120 is an abundant number, since it is smaller than the sum of its proper divisors (19553683360).

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

12122021120 is an equidigital number, since it uses as much as digits as its factorization.

12122021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860971 (or 860957 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12122021120 its reverse (2112022121), we get a palindrome (14234043241).

The spelling of 12122021120 in words is "twelve billion, one hundred twenty-two million, twenty-one thousand, one hundred twenty".