12022112100 has 144 divisors (see below), whose sum is σ = 35430176768. Its totient is φ = 3146895360.

The previous prime is 12022112057. The next prime is 12022112147. The reversal of 12022112100 is 121122021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3694074 + ... + 3697326.

Almost surely, 2^12022112100 is an apocalyptic number.

12022112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12022112100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17715088384).

12022112100 is an abundant number, since it is smaller than the sum of its proper divisors (23408064668).

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

12022112100 is a wasteful number, since it uses less digits than its factorization.

12022112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494 (or 3487 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12022112100 its reverse (121122021), we get a palindrome (12143234121).

The spelling of 12022112100 in words is "twelve billion, twenty-two million, one hundred twelve thousand, one hundred".