20012012220112 has 80 divisors (see below), whose sum is σ = 42527948037120. Its totient is φ = 9047031910400.

The previous prime is 20012012220077. The next prime is 20012012220181. The reversal of 20012012220112 is 21102221021002.

It is a happy number.

It is a super-3 number, since 3×20012012220112³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35851089 + ... + 36405007.

It is an arithmetic number, because the mean of its divisors is an integer number (531599350464).

Almost surely, 2^{20012012220112} is an apocalyptic number.

20012012220112 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 20012012220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21263974018560).

20012012220112 is an abundant number, since it is smaller than the sum of its proper divisors (22515935817008).

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

20012012220112 is a wasteful number, since it uses less digits than its factorization.

20012012220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555052 (or 555046 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012012220112 its reverse (21102221021002), we get a palindrome (41114233241114).

The spelling of 20012012220112 in words is "twenty trillion, twelve billion, twelve million, two hundred twenty thousand, one hundred twelve".