10001121204 has 24 divisors (see below), whose sum is σ = 23396889600. Its totient is φ = 3325001344.

The previous prime is 10001121197. The next prime is 10001121223. The reversal of 10001121204 is 40212110001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 10001121204.

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 7 ways as a sum of consecutive naturals, for example, 1083429 + ... + 1092620.

It is an arithmetic number, because the mean of its divisors is an integer number (974870400).

Almost surely, 2^10001121204 is an apocalyptic number.

It is an amenable number.

10001121204 is an abundant number, since it is smaller than the sum of its proper divisors (13395768396).

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

10001121204 is a wasteful number, since it uses less digits than its factorization.

10001121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176439 (or 2176437 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10001121204 its reverse (40212110001), we get a palindrome (50213231205).

The spelling of 10001121204 in words is "ten billion, one million, one hundred twenty-one thousand, two hundred four".