123442250204221 has 8 divisors (see below), whose sum is σ = 135446068439640. Its totient is φ = 111796754901312.

The previous prime is 123442250204219. The next prime is 123442250204233. The reversal of 123442250204221 is 122402052244321.

It can be written as a sum of positive squares in 4 ways, for example, as 49349079512100 + 74093170692121 = 7024890^2 + 8607739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123442250204221 - 2¹ = 123442250204219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123442250204321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89580732406 + ... + 89580733783.

It is an arithmetic number, because the mean of its divisors is an integer number (16930758554955).

Almost surely, 2^{123442250204221} is an apocalyptic number.

It is an amenable number.

123442250204221 is a deficient number, since it is larger than the sum of its proper divisors (12003818235419).

123442250204221 is a wasteful number, since it uses less digits than its factorization.

123442250204221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179161466255.

The product of its (nonzero) digits is 61440, while the sum is 34.

The spelling of 123442250204221 in words is "one hundred twenty-three trillion, four hundred forty-two billion, two hundred fifty million, two hundred four thousand, two hundred twenty-one".