22120011220212 has 72 divisors (see below), whose sum is σ = 56671367975040. Its totient is φ = 7273688647680.

The previous prime is 22120011220129. The next prime is 22120011220213. The reversal of 22120011220212 is 21202211002122.

It is a happy number.

22120011220212 is a `hidden beast` number, since 2 + 21 + 200 + 11 + 220 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120011220213) 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, 93714 + ... + 6651977.

Almost surely, 2^{22120011220212} 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 22120011220212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28335683987520).

22120011220212 is an abundant number, since it is smaller than the sum of its proper divisors (34551356754828).

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

22120011220212 is a wasteful number, since it uses less digits than its factorization.

22120011220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6746933 (or 6746928 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22120011220212 its reverse (21202211002122), we get a palindrome (43322222222334).

The spelling of 22120011220212 in words is "twenty-two trillion, one hundred twenty billion, eleven million, two hundred twenty thousand, two hundred twelve".