122009236 has 6 divisors (see below), whose sum is σ = 213516170. Its totient is φ = 61004616.

The previous prime is 122009231. The next prime is 122009243. The reversal of 122009236 is 632900221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 75168900 + 46840336 = 8670^2 + 6844^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122009236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122009231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15251151 + ... + 15251158.

Almost surely, 2^122009236 is an apocalyptic number.

It is an amenable number.

122009236 is a deficient number, since it is larger than the sum of its proper divisors (91506934).

122009236 is a wasteful number, since it uses less digits than its factorization.

122009236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30502313 (or 30502311 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 122009236 is about 11045.7791033498. The cubic root of 122009236 is about 495.9800817964.

Adding to 122009236 its reverse (632900221), we get a palindrome (754909457).

The spelling of 122009236 in words is "one hundred twenty-two million, nine thousand, two hundred thirty-six".