22120030212 has 288 divisors, whose sum is σ = 64839936000. Its totient is φ = 5855351040.

The previous prime is 22120030211. The next prime is 22120030217. The reversal of 22120030212 is 21203002122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22120030191 and 22120030200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120030211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 159136839 + ... + 159136977.

Almost surely, 2^22120030212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22120030212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32419968000).

22120030212 is an abundant number, since it is smaller than the sum of its proper divisors (42719905788).

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

22120030212 is a wasteful number, since it uses less digits than its factorization.

22120030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22120030212 its reverse (21203002122), we get a palindrome (43323032334).

The spelling of 22120030212 in words is "twenty-two billion, one hundred twenty million, thirty thousand, two hundred twelve".