212322011100 has 72 divisors (see below), whose sum is σ = 622733736240. Its totient is φ = 55843591680.

The previous prime is 212322011089. The next prime is 212322011107. The reversal of 212322011100 is 1110223212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212322011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212322011107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4825635 + ... + 4869434.

It is an arithmetic number, because the mean of its divisors is an integer number (8649079670).

Almost surely, 2^212322011100 is an apocalyptic number.

212322011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212322011100 is an abundant number, since it is smaller than the sum of its proper divisors (410411725140).

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

212322011100 is a wasteful number, since it uses less digits than its factorization.

212322011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9695159 (or 9695152 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212322011100 its reverse (1110223212), we get a palindrome (213432234312).

The spelling of 212322011100 in words is "two hundred twelve billion, three hundred twenty-two million, eleven thousand, one hundred".