20001211020112 has 160 divisors (see below), whose sum is σ = 48253654425600. Its totient is φ = 7836420017664.

The previous prime is 20001211020103. The next prime is 20001211020139. The reversal of 20001211020112 is 21102011210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001211020092 and 20001211020101.

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, 112412083 + ... + 112589869.

It is an arithmetic number, because the mean of its divisors is an integer number (301585340160).

Almost surely, 2^{20001211020112} 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 20001211020112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24126827212800).

20001211020112 is an abundant number, since it is smaller than the sum of its proper divisors (28252443405488).

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

20001211020112 is a wasteful number, since it uses less digits than its factorization.

20001211020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179673 (or 179667 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20001211020112 its reverse (21102011210002), we get a palindrome (41103222230114).

The spelling of 20001211020112 in words is "twenty trillion, one billion, two hundred eleven million, twenty thousand, one hundred twelve".