20012222012112 has 160 divisors (see below), whose sum is σ = 62763852856320. Its totient is φ = 6054698160000.

The previous prime is 20012222012071. The next prime is 20012222012177. The reversal of 20012222012112 is 21121022221002.

It is a happy number.

20012222012112 is a `hidden beast` number, since 200 + 122 + 220 + 12 + 112 = 666.

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

It is a congruent number.

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, 338514 + ... + 6335537.

It is an arithmetic number, because the mean of its divisors is an integer number (392274080352).

Almost surely, 2^{20012222012112} is an apocalyptic number.

20012222012112 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 20012222012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31381926428160).

20012222012112 is an abundant number, since it is smaller than the sum of its proper divisors (42751630844208).

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

20012222012112 is a wasteful number, since it uses less digits than its factorization.

20012222012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674710 (or 6674698 counting only the distinct ones).

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

Adding to 20012222012112 its reverse (21121022221002), we get a palindrome (41133244233114).

The spelling of 20012222012112 in words is "twenty trillion, twelve billion, two hundred twenty-two million, twelve thousand, one hundred twelve".