10421331123 has 24 divisors (see below), whose sum is σ = 16187727312. Its totient is φ = 5946193344.

The previous prime is 10421331077. The next prime is 10421331127. The reversal of 10421331123 is 32113312401.

10421331123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10421331123 - 2⁶ = 10421331059 is a prime.

It is a super-2 number, since 2×10421331123² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 10421331123.

It is not an unprimeable number, because it can be changed into a prime (10421331127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47161 + ... + 151877.

It is an arithmetic number, because the mean of its divisors is an integer number (674488638).

Almost surely, 2^10421331123 is an apocalyptic number.

10421331123 is a deficient number, since it is larger than the sum of its proper divisors (5766396189).

10421331123 is a wasteful number, since it uses less digits than its factorization.

10421331123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105411 (or 105404 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 10421331123 its reverse (32113312401), we get a palindrome (42534643524).

The spelling of 10421331123 in words is "ten billion, four hundred twenty-one million, three hundred thirty-one thousand, one hundred twenty-three".