122217538 has 16 divisors (see below), whose sum is σ = 201366720. Its totient is φ = 55375056.

The previous prime is 122217533. The next prime is 122217541. The reversal of 122217538 is 835712221.

It is not an unprimeable number, because it can be changed into a prime (122217533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69045 + ... + 70792.

It is an arithmetic number, because the mean of its divisors is an integer number (12585420).

Almost surely, 2^122217538 is an apocalyptic number.

122217538 is a deficient number, since it is larger than the sum of its proper divisors (79149182).

122217538 is a wasteful number, since it uses less digits than its factorization.

122217538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139881.

The product of its digits is 6720, while the sum is 31.

The square root of 122217538 is about 11055.2041139004. The cubic root of 122217538 is about 496.2621776648.

Adding to 122217538 its reverse (835712221), we get a palindrome (957929759).

The spelling of 122217538 in words is "one hundred twenty-two million, two hundred seventeen thousand, five hundred thirty-eight".