123012205210345 has 64 divisors (see below), whose sum is σ = 164677676382720. Its totient is φ = 87464253184000.

The previous prime is 123012205210339. The next prime is 123012205210373. The reversal of 123012205210345 is 543012502210321.

It is a happy number.

It is not a de Polignac number, because 123012205210345 - 2¹⁵ = 123012205177577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 367168047 + ... + 367502923.

It is an arithmetic number, because the mean of its divisors is an integer number (2573088693480).

Almost surely, 2^{123012205210345} is an apocalyptic number.

It is an amenable number.

123012205210345 is a deficient number, since it is larger than the sum of its proper divisors (41665471172375).

123012205210345 is a wasteful number, since it uses less digits than its factorization.

123012205210345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335826.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 123012205210345 its reverse (543012502210321), we get a palindrome (666024707420666).

The spelling of 123012205210345 in words is "one hundred twenty-three trillion, twelve billion, two hundred five million, two hundred ten thousand, three hundred forty-five".