20001111032 has 64 divisors (see below), whose sum is σ = 43432097280. Its totient is φ = 8457996672.

The previous prime is 20001110989. The next prime is 20001111049. The reversal of 20001111032 is 23011110002.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1626218 + ... + 1638470.

It is an arithmetic number, because the mean of its divisors is an integer number (678626520).

Almost surely, 2^20001111032 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 20001111032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21716048640).

20001111032 is an abundant number, since it is smaller than the sum of its proper divisors (23430986248).

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

20001111032 is a wasteful number, since it uses less digits than its factorization.

20001111032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12652 (or 12648 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20001111032 its reverse (23011110002), we get a palindrome (43012221034).

The spelling of 20001111032 in words is "twenty billion, one million, one hundred eleven thousand, thirty-two".