20211200244 has 96 divisors (see below), whose sum is σ = 56422396800. Its totient is φ = 6233264640.

The previous prime is 20211200209. The next prime is 20211200279. The reversal of 20211200244 is 44200211202.

It is an interprime number because it is at equal distance from previous prime (20211200209) and next prime (20211200279).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15034 + ... + 201614.

It is an arithmetic number, because the mean of its divisors is an integer number (587733300).

Almost surely, 2^20211200244 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 20211200244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28211198400).

20211200244 is an abundant number, since it is smaller than the sum of its proper divisors (36211196556).

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

20211200244 is a wasteful number, since it uses less digits than its factorization.

20211200244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186670 (or 186662 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20211200244 its reverse (44200211202), we get a palindrome (64411411446).

The spelling of 20211200244 in words is "twenty billion, two hundred eleven million, two hundred thousand, two hundred forty-four".