20012012202112 has 96 divisors (see below), whose sum is σ = 46442111359500. Its totient is φ = 8564478031872.

The previous prime is 20012012202107. The next prime is 20012012202113. The reversal of 20012012202112 is 21120221021002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19275120438336 + 736891763776 = 4390344^2 + 858424^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20012012202113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2196714 + ... + 6696982.

Almost surely, 2^{20012012202112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012012202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23221055679750).

20012012202112 is an abundant number, since it is smaller than the sum of its proper divisors (26430099157388).

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

20012012202112 is an equidigital number, since it uses as much as digits as its factorization.

20012012202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501006 (or 4500987 counting only the distinct ones).

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

Adding to 20012012202112 its reverse (21120221021002), we get a palindrome (41132233223114).

The spelling of 20012012202112 in words is "twenty trillion, twelve billion, twelve million, two hundred two thousand, one hundred twelve".