122215605 has 16 divisors (see below), whose sum is σ = 195683904. Its totient is φ = 65135360.

The previous prime is 122215603. The next prime is 122215661. The reversal of 122215605 is 506512221.

It is a happy number.

It is not a de Polignac number, because 122215605 - 2¹ = 122215603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122215603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34570 + ... + 37940.

It is an arithmetic number, because the mean of its divisors is an integer number (12230244).

Almost surely, 2^122215605 is an apocalyptic number.

122215605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122215605 is a deficient number, since it is larger than the sum of its proper divisors (73468299).

122215605 is a wasteful number, since it uses less digits than its factorization.

122215605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5796.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 122215605 is about 11055.1166886650. The cubic root of 122215605 is about 496.2595613467.

Adding to 122215605 its reverse (506512221), we get a palindrome (628727826).

The spelling of 122215605 in words is "one hundred twenty-two million, two hundred fifteen thousand, six hundred five".