20122021102212 has 54 divisors (see below), whose sum is σ = 52678409201418. Its totient is φ = 6476052758784.

The previous prime is 20122021102187. The next prime is 20122021102219. The reversal of 20122021102212 is 21220112022102.

It is a happy number.

20122021102212 is a `hidden beast` number, since 20 + 1 + 220 + 211 + 0 + 2 + 212 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 636382725696 + 19485638376516 = 797736^2 + 4414254^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20122021102219) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 332279493 + ... + 332340044.

Almost surely, 2^{20122021102212} is an apocalyptic number.

It is an amenable number.

20122021102212 is an abundant number, since it is smaller than the sum of its proper divisors (32556388099206).

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

20122021102212 is a wasteful number, since it uses less digits than its factorization.

20122021102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664619605 (or 664619571 counting only the distinct ones).

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

Adding to 20122021102212 its reverse (21220112022102), we get a palindrome (41342133124314).

The spelling of 20122021102212 in words is "twenty trillion, one hundred twenty-two billion, twenty-one million, one hundred two thousand, two hundred twelve".