10421121044 has 24 divisors (see below), whose sum is σ = 18686845800. Its totient is φ = 5082091520.

The previous prime is 10421121043. The next prime is 10421121071. The reversal of 10421121044 is 44012112401.

It can be written as a sum of positive squares in 4 ways, for example, as 2363904400 + 8057216644 = 48620^2 + 89762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421121041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864692 + ... + 876660.

It is an arithmetic number, because the mean of its divisors is an integer number (778618575).

Almost surely, 2^10421121044 is an apocalyptic number.

It is an amenable number.

10421121044 is a deficient number, since it is larger than the sum of its proper divisors (8265724756).

10421121044 is a wasteful number, since it uses less digits than its factorization.

10421121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17323 (or 17321 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 10421121044 its reverse (44012112401), we get a palindrome (54433233445).

The spelling of 10421121044 in words is "ten billion, four hundred twenty-one million, one hundred twenty-one thousand, forty-four".