20100111252 has 96 divisors (see below), whose sum is σ = 51239731200. Its totient is φ = 6095336832.

The previous prime is 20100111203. The next prime is 20100111253. The reversal of 20100111252 is 25211100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100111253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9106333 + ... + 9108539.

It is an arithmetic number, because the mean of its divisors is an integer number (533747200).

Almost surely, 2^20100111252 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 20100111252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25619865600).

20100111252 is an abundant number, since it is smaller than the sum of its proper divisors (31139619948).

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

20100111252 is a wasteful number, since it uses less digits than its factorization.

20100111252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045 (or 3043 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 20100111252 its reverse (25211100102), we get a palindrome (45311211354).

The spelling of 20100111252 in words is "twenty billion, one hundred million, one hundred eleven thousand, two hundred fifty-two".