123221501 has 8 divisors (see below), whose sum is σ = 132894720. Its totient is φ = 113576112.

The previous prime is 123221473. The next prime is 123221503. The reversal of 123221501 is 105122321.

It is a happy number.

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

It is not a de Polignac number, because 123221501 - 2⁶ = 123221437 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 123221501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123221503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2756 + ... + 15938.

It is an arithmetic number, because the mean of its divisors is an integer number (16611840).

Almost surely, 2^123221501 is an apocalyptic number.

It is an amenable number.

123221501 is a deficient number, since it is larger than the sum of its proper divisors (9673219).

123221501 is a wasteful number, since it uses less digits than its factorization.

123221501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13915.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 123221501 is about 11100.5180509740. The cubic root of 123221501 is about 497.6173318202.

Adding to 123221501 its reverse (105122321), we get a palindrome (228343822).

The spelling of 123221501 in words is "one hundred twenty-three million, two hundred twenty-one thousand, five hundred one".