123301221023428 has 24 divisors (see below), whose sum is σ = 246602679265152. Its totient is φ = 52843329606144.

The previous prime is 123301221023311. The next prime is 123301221023429. The reversal of 123301221023428 is 824320122103321.

It is a happy number.

It is a super-2 number, since 2×123301221023428² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123301221023393 and 123301221023402.

It is not an unprimeable number, because it can be changed into a prime (123301221023429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50064825 + ... + 52469887.

It is an arithmetic number, because the mean of its divisors is an integer number (10275111636048).

Almost surely, 2^{123301221023428} is an apocalyptic number.

It is an amenable number.

123301221023428 is an abundant number, since it is smaller than the sum of its proper divisors (123301458241724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123301221023428 is a wasteful number, since it uses less digits than its factorization.

123301221023428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236051 (or 4236049 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 123301221023428 its reverse (824320122103321), we get a palindrome (947621343126749).

The spelling of 123301221023428 in words is "one hundred twenty-three trillion, three hundred one billion, two hundred twenty-one million, twenty-three thousand, four hundred twenty-eight".