20122440404 has 24 divisors (see below), whose sum is σ = 38847211200. Its totient is φ = 9043791680.

The previous prime is 20122440391. The next prime is 20122440413. The reversal of 20122440404 is 40404422102.

It is a self number, because there is not a number n which added to its sum of digits gives 20122440404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2565344 + ... + 2573175.

It is an arithmetic number, because the mean of its divisors is an integer number (1618633800).

Almost surely, 2^20122440404 is an apocalyptic number.

It is an amenable number.

20122440404 is a deficient number, since it is larger than the sum of its proper divisors (18724770796).

20122440404 is a wasteful number, since it uses less digits than its factorization.

20122440404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138623 (or 5138621 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20122440404 its reverse (40404422102), we get a palindrome (60526862506).

The spelling of 20122440404 in words is "twenty billion, one hundred twenty-two million, four hundred forty thousand, four hundred four".