21313302200123 has 2 divisors, whose sum is σ = 21313302200124. Its totient is φ = 21313302200122.

The previous prime is 21313302200119. The next prime is 21313302200231. The reversal of 21313302200123 is 32100220331312.

Together with next prime (21313302200231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21313302200123 - 2² = 21313302200119 is a prime.

It is not a weakly prime, because it can be changed into another prime (21313302800123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656651100061 + 10656651100062.

It is an arithmetic number, because the mean of its divisors is an integer number (10656651100062).

Almost surely, 2^{21313302200123} is an apocalyptic number.

21313302200123 is a deficient number, since it is larger than the sum of its proper divisors (1).

21313302200123 is an equidigital number, since it uses as much as digits as its factorization.

21313302200123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21313302200123 its reverse (32100220331312), we get a palindrome (53413522531435).

The spelling of 21313302200123 in words is "twenty-one trillion, three hundred thirteen billion, three hundred two million, two hundred thousand, one hundred twenty-three".