20100112212 has 192 divisors, whose sum is σ = 50634823680. Its totient is φ = 6197184000.

The previous prime is 20100112189. The next prime is 20100112213. The reversal of 20100112212 is 21221100102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100112213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 187851463 + ... + 187851569.

It is an arithmetic number, because the mean of its divisors is an integer number (263723040).

Almost surely, 2^20100112212 is an apocalyptic number.

It is an amenable number.

20100112212 is an abundant number, since it is smaller than the sum of its proper divisors (30534711468).

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

20100112212 is a wasteful number, since it uses less digits than its factorization.

20100112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20100112212 its reverse (21221100102), we get a palindrome (41321212314).

The spelling of 20100112212 in words is "twenty billion, one hundred million, one hundred twelve thousand, two hundred twelve".