122232100212 has 72 divisors (see below), whose sum is σ = 317689516872. Its totient is φ = 39597465600.

The previous prime is 122232100169. The next prime is 122232100223. The reversal of 122232100212 is 212001232221.

122232100212 is a `hidden beast` number, since 122 + 232 + 100 + 212 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23964897636 + 98267202576 = 154806^2 + 313476^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1121412 + ... + 1225572.

It is an arithmetic number, because the mean of its divisors is an integer number (4412354401).

Almost surely, 2^122232100212 is an apocalyptic number.

122232100212 is a gapful number since it is divisible by the number (12) 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 122232100212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158844758436).

122232100212 is an abundant number, since it is smaller than the sum of its proper divisors (195457416660).

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

122232100212 is a wasteful number, since it uses less digits than its factorization.

122232100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105089 (or 105084 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 122232100212 its reverse (212001232221), we get a palindrome (334233332433).

The spelling of 122232100212 in words is "one hundred twenty-two billion, two hundred thirty-two million, one hundred thousand, two hundred twelve".