123301321051155 has 64 divisors (see below), whose sum is σ = 218140515597312. Its totient is φ = 59088152148480.

The previous prime is 123301321051067. The next prime is 123301321051157. The reversal of 123301321051155 is 551150123103321.

It is not a de Polignac number, because 123301321051155 - 2¹⁷ = 123301320920083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123301321051157) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22637031 + ... + 27550640.

It is an arithmetic number, because the mean of its divisors is an integer number (3408445556208).

Almost surely, 2^{123301321051155} is an apocalyptic number.

123301321051155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123301321051155 is a deficient number, since it is larger than the sum of its proper divisors (94839194546157).

123301321051155 is a wasteful number, since it uses less digits than its factorization.

123301321051155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50188028.

The product of its (nonzero) digits is 13500, while the sum is 33.

Adding to 123301321051155 its reverse (551150123103321), we get a palindrome (674451444154476).

The spelling of 123301321051155 in words is "one hundred twenty-three trillion, three hundred one billion, three hundred twenty-one million, fifty-one thousand, one hundred fifty-five".