12021922388 has 48 divisors (see below), whose sum is σ = 24866300928. Its totient is φ = 4976640000.

The previous prime is 12021922387. The next prime is 12021922399. The reversal of 12021922388 is 88322912021.

It is a happy number.

It is a super-3 number, since 3×12021922388³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021922387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456788 + ... + 482388.

It is an arithmetic number, because the mean of its divisors is an integer number (518047936).

Almost surely, 2^12021922388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021922388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12433150464).

12021922388 is an abundant number, since it is smaller than the sum of its proper divisors (12844378540).

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

12021922388 is a wasteful number, since it uses less digits than its factorization.

12021922388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26184 (or 26182 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 12021922388 in words is "twelve billion, twenty-one million, nine hundred twenty-two thousand, three hundred eighty-eight".