20010212112 has 160 divisors (see below), whose sum is σ = 57519461376. Its totient is φ = 5943744000.

The previous prime is 20010212093. The next prime is 20010212147. The reversal of 20010212112 is 21121201002.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5490963 + ... + 5494605.

Almost surely, 2^20010212112 is an apocalyptic number.

20010212112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28759730688).

20010212112 is an abundant number, since it is smaller than the sum of its proper divisors (37509249264).

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

20010212112 is a wasteful number, since it uses less digits than its factorization.

20010212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869 (or 3863 counting only the distinct ones).

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

Adding to 20010212112 its reverse (21121201002), we get a palindrome (41131413114).

The spelling of 20010212112 in words is "twenty billion, ten million, two hundred twelve thousand, one hundred twelve".