123221495 has 4 divisors (see below), whose sum is σ = 147865800. Its totient is φ = 98577192.

The previous prime is 123221473. The next prime is 123221503. The reversal of 123221495 is 594122321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123221495 - 2¹² = 123217399 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12322145 + ... + 12322154.

It is an arithmetic number, because the mean of its divisors is an integer number (36966450).

Almost surely, 2^123221495 is an apocalyptic number.

123221495 is a deficient number, since it is larger than the sum of its proper divisors (24644305).

123221495 is an equidigital number, since it uses as much as digits as its factorization.

123221495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24644304.

The product of its digits is 4320, while the sum is 29.

The square root of 123221495 is about 11100.5177807164. The cubic root of 123221495 is about 497.6173237434.

The spelling of 123221495 in words is "one hundred twenty-three million, two hundred twenty-one thousand, four hundred ninety-five".