20211100032 has 128 divisors (see below), whose sum is σ = 54989595360. Its totient is φ = 6575357952.

The previous prime is 20211100009. The next prime is 20211100057. The reversal of 20211100032 is 23000111202.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a junction number, because it is equal to n+sod(n) for n = 20211099990 and 20211100017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2715388 + ... + 2722820.

Almost surely, 2^20211100032 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 20211100032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27494797680).

20211100032 is an abundant number, since it is smaller than the sum of its proper divisors (34778495328).

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

20211100032 is an equidigital number, since it uses as much as digits as its factorization.

20211100032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620 (or 7608 counting only the distinct ones).

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

Adding to 20211100032 its reverse (23000111202), we get a palindrome (43211211234).

The spelling of 20211100032 in words is "twenty billion, two hundred eleven million, one hundred thousand, thirty-two".