122135201 has 4 divisors (see below), whose sum is σ = 122222100. Its totient is φ = 122048304.

The previous prime is 122135183. The next prime is 122135219. The reversal of 122135201 is 102531221.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (122135183) and next prime (122135219).

It can be written as a sum of positive squares in 2 ways, for example, as 61606801 + 60528400 = 7849^2 + 7780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122135201 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 122135201.

It is not an unprimeable number, because it can be changed into a prime (122135231) 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, 41306 + ... + 44163.

It is an arithmetic number, because the mean of its divisors is an integer number (30555525).

Almost surely, 2^122135201 is an apocalyptic number.

It is an amenable number.

122135201 is a deficient number, since it is larger than the sum of its proper divisors (86899).

122135201 is an equidigital number, since it uses as much as digits as its factorization.

122135201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86898.

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

The square root of 122135201 is about 11051.4795842005. The cubic root of 122135201 is about 496.1507099794.

Adding to 122135201 its reverse (102531221), we get a palindrome (224666422).

The spelling of 122135201 in words is "one hundred twenty-two million, one hundred thirty-five thousand, two hundred one".