21322430323123 has 16 divisors (see below), whose sum is σ = 21632418130176. Its totient is φ = 21013746144160.

The previous prime is 21322430323121. The next prime is 21322430323127. The reversal of 21322430323123 is 32132303422312.

It is a cyclic number.

It is not a de Polignac number, because 21322430323123 - 2¹ = 21322430323121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21322430323121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89265336 + ... + 89503882.

It is an arithmetic number, because the mean of its divisors is an integer number (1352026133136).

Almost surely, 2^{21322430323123} is an apocalyptic number.

21322430323123 is a deficient number, since it is larger than the sum of its proper divisors (309987807053).

21322430323123 is a wasteful number, since it uses less digits than its factorization.

21322430323123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241274.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 21322430323123 its reverse (32132303422312), we get a palindrome (53454733745435).

The spelling of 21322430323123 in words is "twenty-one trillion, three hundred twenty-two billion, four hundred thirty million, three hundred twenty-three thousand, one hundred twenty-three".