122231385 has 12 divisors (see below), whose sum is σ = 211867812. Its totient is φ = 65190048.

The previous prime is 122231381. The next prime is 122231423. The reversal of 122231385 is 583132221.

It can be written as a sum of positive squares in 2 ways, for example, as 47114496 + 75116889 = 6864^2 + 8667^2 .

It is not a de Polignac number, because 122231385 - 2² = 122231381 is a prime.

It is a super-2 number, since 2×122231385² = 29881022958036450, which contains 22 as substring.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (122231381) 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 11 ways as a sum of consecutive naturals, for example, 1358082 + ... + 1358171.

It is an arithmetic number, because the mean of its divisors is an integer number (17655651).

Almost surely, 2^122231385 is an apocalyptic number.

122231385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122231385 is a deficient number, since it is larger than the sum of its proper divisors (89636427).

122231385 is a wasteful number, since it uses less digits than its factorization.

122231385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716264 (or 2716261 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 122231385 is about 11055.8303623021. The cubic root of 122231385 is about 496.2809187909.

The spelling of 122231385 in words is "one hundred twenty-two million, two hundred thirty-one thousand, three hundred eighty-five".