21141430123 has 12 divisors (see below), whose sum is σ = 23264595144. Its totient is φ = 19197569600.

The previous prime is 21141430097. The next prime is 21141430133. The reversal of 21141430123 is 32103414112.

It is not a de Polignac number, because 21141430123 - 2⁹ = 21141429611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21141430094 and 21141430103.

It is not an unprimeable number, because it can be changed into a prime (21141430133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7440 + ... + 205762.

It is an arithmetic number, because the mean of its divisors is an integer number (1938716262).

Almost surely, 2^21141430123 is an apocalyptic number.

21141430123 is a deficient number, since it is larger than the sum of its proper divisors (2123165021).

21141430123 is a wasteful number, since it uses less digits than its factorization.

21141430123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199226 (or 199215 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21141430123 its reverse (32103414112), we get a palindrome (53244844235).

The spelling of 21141430123 in words is "twenty-one billion, one hundred forty-one million, four hundred thirty thousand, one hundred twenty-three".