123442220440401 has 16 divisors (see below), whose sum is σ = 167046951026688. Its totient is φ = 81066162949200.

The previous prime is 123442220440351. The next prime is 123442220440423. The reversal of 123442220440401 is 104044022244321.

It is not a de Polignac number, because 123442220440401 - 2¹⁸ = 123442220178257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123442220444401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46892656 + ... + 49455086.

It is an arithmetic number, because the mean of its divisors is an integer number (10440434439168).

Almost surely, 2^{123442220440401} is an apocalyptic number.

It is an amenable number.

123442220440401 is a deficient number, since it is larger than the sum of its proper divisors (43604730586287).

123442220440401 is a wasteful number, since it uses less digits than its factorization.

123442220440401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802172.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 123442220440401 its reverse (104044022244321), we get a palindrome (227486242684722).

The spelling of 123442220440401 in words is "one hundred twenty-three trillion, four hundred forty-two billion, two hundred twenty million, four hundred forty thousand, four hundred one".