20011012010112 has 128 divisors (see below), whose sum is σ = 56289200322240. Its totient is φ = 6277046632448.

The previous prime is 20011012010081. The next prime is 20011012010137. The reversal of 20011012010112 is 21101021011002.

It is a tau number, because it is divible by the number of its divisors (128).

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 15 ways as a sum of consecutive naturals, for example, 45129388 + ... + 45570644.

Almost surely, 2^{20011012010112} 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 20011012010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28144600161120).

20011012010112 is an abundant number, since it is smaller than the sum of its proper divisors (36278188312128).

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

20011012010112 is a wasteful number, since it uses less digits than its factorization.

20011012010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448238 (or 448226 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20011012010112 its reverse (21101021011002), we get a palindrome (41112033021114).

The spelling of 20011012010112 in words is "twenty trillion, eleven billion, twelve million, ten thousand, one hundred twelve".