20001010111050 has 96 divisors (see below), whose sum is σ = 51222063720960. Its totient is φ = 5159587507200.

The previous prime is 20001010111009. The next prime is 20001010111051. The reversal of 20001010111050 is 5011101010002.

It is not an unprimeable number, because it can be changed into a prime (20001010111051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11426646 + ... + 13060254.

It is an arithmetic number, because the mean of its divisors is an integer number (533563163760).

Almost surely, 2^{20001010111050} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001010111050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25611031860480).

20001010111050 is an abundant number, since it is smaller than the sum of its proper divisors (31221053609910).

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

20001010111050 is a wasteful number, since it uses less digits than its factorization.

20001010111050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636288 (or 1636283 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 12.

Adding to 20001010111050 its reverse (5011101010002), we get a palindrome (25012111121052).

The spelling of 20001010111050 in words is "twenty trillion, one billion, ten million, one hundred eleven thousand, fifty".