20211244404 has 48 divisors (see below), whose sum is σ = 51152660160. Its totient is φ = 6174097920.

The previous prime is 20211244399. The next prime is 20211244441. The reversal of 20211244404 is 40444211202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444357 + ... + 487724.

It is an arithmetic number, because the mean of its divisors is an integer number (1065680420).

Almost surely, 2^20211244404 is an apocalyptic number.

It is an amenable number.

20211244404 is an abundant number, since it is smaller than the sum of its proper divisors (30941415756).

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

20211244404 is a wasteful number, since it uses less digits than its factorization.

20211244404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932240 (or 932238 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 20211244404 its reverse (40444211202), we get a palindrome (60655455606).

The spelling of 20211244404 in words is "twenty billion, two hundred eleven million, two hundred forty-four thousand, four hundred four".