20212211232 has 144 divisors (see below), whose sum is σ = 60994533600. Its totient is φ = 6580611072.

The previous prime is 20212211221. The next prime is 20212211249. The reversal of 20212211232 is 23211221202.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304144 + ... + 364592.

It is an arithmetic number, because the mean of its divisors is an integer number (423573150).

Almost surely, 2^20212211232 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 20212211232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30497266800).

20212211232 is an abundant number, since it is smaller than the sum of its proper divisors (40782322368).

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

20212211232 is an equidigital number, since it uses as much as digits as its factorization.

20212211232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60517 (or 60497 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20212211232 its reverse (23211221202), we get a palindrome (43423432434).

The spelling of 20212211232 in words is "twenty billion, two hundred twelve million, two hundred eleven thousand, two hundred thirty-two".