122135263 has 4 divisors (see below), whose sum is σ = 123255880. Its totient is φ = 121014648.

The previous prime is 122135243. The next prime is 122135291. The reversal of 122135263 is 362531221.

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 122135263 - 2⁵ = 122135231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122135243) by changing a digit.

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, 560145 + ... + 560362.

It is an arithmetic number, because the mean of its divisors is an integer number (30813970).

Almost surely, 2^122135263 is an apocalyptic number.

122135263 is a deficient number, since it is larger than the sum of its proper divisors (1120617).

122135263 is a wasteful number, since it uses less digits than its factorization.

122135263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120616.

The product of its digits is 2160, while the sum is 25.

The square root of 122135263 is about 11051.4823892544. The cubic root of 122135263 is about 496.1507939338.

Adding to 122135263 its reverse (362531221), we get a palindrome (484666484).

The spelling of 122135263 in words is "one hundred twenty-two million, one hundred thirty-five thousand, two hundred sixty-three".