122100361 has 4 divisors (see below), whose sum is σ = 122490772. Its totient is φ = 121709952.

The previous prime is 122100359. The next prime is 122100367. The reversal of 122100361 is 163001221.

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 35331136 + 86769225 = 5944^2 + 9315^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100361 - 2¹ = 122100359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122100367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194736 + ... + 195361.

It is an arithmetic number, because the mean of its divisors is an integer number (30622693).

Almost surely, 2^122100361 is an apocalyptic number.

It is an amenable number.

122100361 is a deficient number, since it is larger than the sum of its proper divisors (390411).

122100361 is an equidigital number, since it uses as much as digits as its factorization.

122100361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390410.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 122100361 is about 11049.9032122458. The cubic root of 122100361 is about 496.1035285649.

Adding to 122100361 its reverse (163001221), we get a palindrome (285101582).

The spelling of 122100361 in words is "one hundred twenty-two million, one hundred thousand, three hundred sixty-one".