20102021222112 has 72 divisors (see below), whose sum is σ = 57699376423416. Its totient is φ = 6638050611456.

The previous prime is 20102021222111. The next prime is 20102021222131. The reversal of 20102021222112 is 21122212020102.

It is a happy number.

20102021222112 is a `hidden beast` number, since 201 + 0 + 20 + 212 + 221 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 (20102021222111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326131263 + ... + 326192894.

It is an arithmetic number, because the mean of its divisors is an integer number (801380228103).

Almost surely, 2^{20102021222112} is an apocalyptic number.

It is an amenable number.

20102021222112 is an abundant number, since it is smaller than the sum of its proper divisors (37597355201304).

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

20102021222112 is a wasteful number, since it uses less digits than its factorization.

20102021222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652324280 (or 652324269 counting only the distinct ones).

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

Adding to 20102021222112 its reverse (21122212020102), we get a palindrome (41224233242214).

The spelling of 20102021222112 in words is "twenty trillion, one hundred two billion, twenty-one million, two hundred twenty-two thousand, one hundred twelve".