20111020032 has 104 divisors (see below), whose sum is σ = 53708059360. Its totient is φ = 6693027840.

The previous prime is 20111020031. The next prime is 20111020037. The reversal of 20111020032 is 23002011102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111020031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13135107 + ... + 13136637.

Almost surely, 2^20111020032 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 20111020032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26854029680).

20111020032 is an abundant number, since it is smaller than the sum of its proper divisors (33597039328).

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

20111020032 is a wasteful number, since it uses less digits than its factorization.

20111020032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627 (or 2605 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20111020032 its reverse (23002011102), we get a palindrome (43113031134).

The spelling of 20111020032 in words is "twenty billion, one hundred eleven million, twenty thousand, thirty-two".