22120220200212 has 18 divisors (see below), whose sum is σ = 55915001061738. Its totient is φ = 7373406733392.

The previous prime is 22120220200159. The next prime is 22120220200217. The reversal of 22120220200212 is 21200202202122.

22120220200212 is a `hidden beast` number, since 2 + 212 + 0 + 220 + 20 + 0 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16752861836676 + 5367358363536 = 4093026^2 + 2316756^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×22120220200212³ (a number of 41 digits) contains 333 as substring.

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 (22120220200217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307225280523 + ... + 307225280594.

Almost surely, 2^{22120220200212} is an apocalyptic number.

It is an amenable number.

22120220200212 is an abundant number, since it is smaller than the sum of its proper divisors (33794780861526).

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

22120220200212 is a wasteful number, since it uses less digits than its factorization.

22120220200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614450561127 (or 614450561122 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22120220200212 its reverse (21200202202122), we get a palindrome (43320422402334).

The spelling of 22120220200212 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty million, two hundred thousand, two hundred twelve".