22100719212 has 576 divisors, whose sum is σ = 73574323200. Its totient is φ = 5679590400.

The previous prime is 22100719211. The next prime is 22100719279. The reversal of 22100719212 is 21291700122.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22100719211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 132339553 + ... + 132339719.

It is an arithmetic number, because the mean of its divisors is an integer number (127733200).

Almost surely, 2^22100719212 is an apocalyptic number.

22100719212 is a gapful number since it is divisible by the number (22) 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 22100719212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36787161600).

22100719212 is an abundant number, since it is smaller than the sum of its proper divisors (51473603988).

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

22100719212 is a wasteful number, since it uses less digits than its factorization.

22100719212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The spelling of 22100719212 in words is "twenty-two billion, one hundred million, seven hundred nineteen thousand, two hundred twelve".