12002222100 has 288 divisors, whose sum is σ = 40272422400. Its totient is φ = 2729203200.

The previous prime is 12002222053. The next prime is 12002222107. The reversal of 12002222100 is 122220021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002222107) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6708006 + ... + 6709794.

It is an arithmetic number, because the mean of its divisors is an integer number (139834800).

Almost surely, 2^12002222100 is an apocalyptic number.

12002222100 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 12002222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20136211200).

12002222100 is an abundant number, since it is smaller than the sum of its proper divisors (28270200300).

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

12002222100 is a wasteful number, since it uses less digits than its factorization.

12002222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1936 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

12002222100 divided by its sum of digits (12) gives a triangular number (1000185175 = T₄₄₇₂₅).

Adding to 12002222100 its reverse (122220021), we get a palindrome (12124442121).

The spelling of 12002222100 in words is "twelve billion, two million, two hundred twenty-two thousand, one hundred".