122200513 has 4 divisors (see below), whose sum is σ = 122655060. Its totient is φ = 121745968.

The previous prime is 122200511. The next prime is 122200537. The reversal of 122200513 is 315002221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76597504 + 45603009 = 8752^2 + 6753^2 .

It is a cyclic number.

It is not a de Polignac number, because 122200513 - 2¹ = 122200511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122200511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226870 + ... + 227407.

It is an arithmetic number, because the mean of its divisors is an integer number (30663765).

Almost surely, 2^122200513 is an apocalyptic number.

It is an amenable number.

122200513 is a deficient number, since it is larger than the sum of its proper divisors (454547).

122200513 is an equidigital number, since it uses as much as digits as its factorization.

122200513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454546.

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

The square root of 122200513 is about 11054.4340877315. The cubic root of 122200513 is about 496.2391333564.

Adding to 122200513 its reverse (315002221), we get a palindrome (437202734).

The spelling of 122200513 in words is "one hundred twenty-two million, two hundred thousand, five hundred thirteen".