122206540 has 36 divisors (see below), whose sum is σ = 272630736. Its totient is φ = 46004992.

The previous prime is 122206531. The next prime is 122206541. The reversal of 122206540 is 45602221.

It is not an unprimeable number, because it can be changed into a prime (122206541) 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, 4792 + ... + 16351.

It is an arithmetic number, because the mean of its divisors is an integer number (7573076).

Almost surely, 2^122206540 is an apocalyptic number.

122206540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122206540 is an abundant number, since it is smaller than the sum of its proper divisors (150424196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122206540 is a wasteful number, since it uses less digits than its factorization.

122206540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21186 (or 21167 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 122206540 is about 11054.7066899127. The cubic root of 122206540 is about 496.2472914893.

Adding to 122206540 its reverse (45602221), we get a palindrome (167808761).

The spelling of 122206540 in words is "one hundred twenty-two million, two hundred six thousand, five hundred forty".