123321023427109 has 2 divisors, whose sum is σ = 123321023427110. Its totient is φ = 123321023427108.

The previous prime is 123321023427089. The next prime is 123321023427131. The reversal of 123321023427109 is 901724320123321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82283585260900 + 41037438166209 = 9071030^2 + 6406047^2 .

It is a cyclic number.

It is not a de Polignac number, because 123321023427109 - 2³³ = 123312433492517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123321023427209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660511713554 + 61660511713555.

It is an arithmetic number, because the mean of its divisors is an integer number (61660511713555).

Almost surely, 2^{123321023427109} is an apocalyptic number.

It is an amenable number.

123321023427109 is a deficient number, since it is larger than the sum of its proper divisors (1).

123321023427109 is an equidigital number, since it uses as much as digits as its factorization.

123321023427109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 123321023427109 in words is "one hundred twenty-three trillion, three hundred twenty-one billion, twenty-three million, four hundred twenty-seven thousand, one hundred nine".