123441200321221 has 16 divisors (see below), whose sum is σ = 123833276582400. Its totient is φ = 123049791187200.

The previous prime is 123441200321209. The next prime is 123441200321251. The reversal of 123441200321221 is 122123002144321.

It is a cyclic number.

It is not a de Polignac number, because 123441200321221 - 2⁷ = 123441200321093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123441200321221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123441200321251) 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, 1634706856 + ... + 1634782366.

It is an arithmetic number, because the mean of its divisors is an integer number (7739579786400).

Almost surely, 2^{123441200321221} is an apocalyptic number.

It is an amenable number.

123441200321221 is a deficient number, since it is larger than the sum of its proper divisors (392076261179).

123441200321221 is a wasteful number, since it uses less digits than its factorization.

123441200321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79860.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 123441200321221 its reverse (122123002144321), we get a palindrome (245564202465542).

The spelling of 123441200321221 in words is "one hundred twenty-three trillion, four hundred forty-one billion, two hundred million, three hundred twenty-one thousand, two hundred twenty-one".