122500321 has 12 divisors (see below), whose sum is σ = 128780820. Its totient is φ = 116387040.

The previous prime is 122500319. The next prime is 122500397. The reversal of 122500321 is 123005221.

It can be written as a sum of positive squares in 2 ways, for example, as 70140625 + 52359696 = 8375^2 + 7236^2 .

It is not a de Polignac number, because 122500321 - 2¹ = 122500319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122500295 and 122500304.

It is not an unprimeable number, because it can be changed into a prime (122501321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129711 + ... + 130651.

It is an arithmetic number, because the mean of its divisors is an integer number (10731735).

Almost surely, 2^122500321 is an apocalyptic number.

It is an amenable number.

122500321 is a deficient number, since it is larger than the sum of its proper divisors (6280499).

122500321 is an frugal number, since it uses more digits than its factorization.

122500321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 122500321 is about 11067.9863118817. The cubic root of 122500321 is about 496.6446279928.

Adding to 122500321 its reverse (123005221), we get a palindrome (245505542).

The spelling of 122500321 in words is "one hundred twenty-two million, five hundred thousand, three hundred twenty-one".