123210020333173 has 2 divisors, whose sum is σ = 123210020333174. Its totient is φ = 123210020333172.

The previous prime is 123210020333119. The next prime is 123210020333203. The reversal of 123210020333173 is 371333020012321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85437171427729 + 37772848905444 = 9243223^2 + 6145962^2 .

It is an emirp because it is prime and its reverse (371333020012321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123210020333173 - 2⁹ = 123210020332661 is a prime.

It is a super-2 number, since 2×123210020333173² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123210020333773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61605010166586 + 61605010166587.

It is an arithmetic number, because the mean of its divisors is an integer number (61605010166587).

Almost surely, 2^{123210020333173} is an apocalyptic number.

It is an amenable number.

123210020333173 is a deficient number, since it is larger than the sum of its proper divisors (1).

123210020333173 is an equidigital number, since it uses as much as digits as its factorization.

123210020333173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 31.

Adding to 123210020333173 its reverse (371333020012321), we get a palindrome (494543040345494).

The spelling of 123210020333173 in words is "one hundred twenty-three trillion, two hundred ten billion, twenty million, three hundred thirty-three thousand, one hundred seventy-three".