20123201244 has 24 divisors (see below), whose sum is σ = 48468786688. Its totient is φ = 6491355120.

The previous prime is 20123201201. The next prime is 20123201281. The reversal of 20123201244 is 44210232102.

It is a self number, because there is not a number n which added to its sum of digits gives 20123201244.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27046942 + ... + 27047685.

Almost surely, 2^20123201244 is an apocalyptic number.

It is an amenable number.

20123201244 is an abundant number, since it is smaller than the sum of its proper divisors (28345585444).

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

20123201244 is a wasteful number, since it uses less digits than its factorization.

20123201244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54094665 (or 54094663 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20123201244 its reverse (44210232102), we get a palindrome (64333433346).

The spelling of 20123201244 in words is "twenty billion, one hundred twenty-three million, two hundred one thousand, two hundred forty-four".