21314230123 has 4 divisors (see below), whose sum is σ = 21381467760. Its totient is φ = 21246992488.

The previous prime is 21314230121. The next prime is 21314230127. The reversal of 21314230123 is 32103241312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21314230123 - 2¹ = 21314230121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21314230094 and 21314230103.

It is not an unprimeable number, because it can be changed into a prime (21314230121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33618343 + ... + 33618976.

It is an arithmetic number, because the mean of its divisors is an integer number (5345366940).

Almost surely, 2^21314230123 is an apocalyptic number.

21314230123 is a deficient number, since it is larger than the sum of its proper divisors (67237637).

21314230123 is an equidigital number, since it uses as much as digits as its factorization.

21314230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67237636.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21314230123 its reverse (32103241312), we get a palindrome (53417471435).

The spelling of 21314230123 in words is "twenty-one billion, three hundred fourteen million, two hundred thirty thousand, one hundred twenty-three".