10020121144 has 32 divisors (see below), whose sum is σ = 20687270400. Its totient is φ = 4512029920.

The previous prime is 10020121121. The next prime is 10020121187. The reversal of 10020121144 is 44112102001.

It is a happy number.

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, 522664 + ... + 541495.

It is an arithmetic number, because the mean of its divisors is an integer number (646477200).

Almost surely, 2^10020121144 is an apocalyptic number.

It is an amenable number.

10020121144 is an abundant number, since it is smaller than the sum of its proper divisors (10667149256).

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

10020121144 is a wasteful number, since it uses less digits than its factorization.

10020121144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064283 (or 1064279 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10020121144 its reverse (44112102001), we get a palindrome (54132223145).

The spelling of 10020121144 in words is "ten billion, twenty million, one hundred twenty-one thousand, one hundred forty-four".