122212636 has 96 divisors (see below), whose sum is σ = 284497920. Its totient is φ = 44582400.

The previous prime is 122212621. The next prime is 122212637. The reversal of 122212636 is 636212221.

It is a self number, because there is not a number n which added to its sum of digits gives 122212636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283341 + ... + 283771.

It is an arithmetic number, because the mean of its divisors is an integer number (2963520).

Almost surely, 2^122212636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122212636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142248960).

122212636 is an abundant number, since it is smaller than the sum of its proper divisors (162285284).

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

122212636 is a wasteful number, since it uses less digits than its factorization.

122212636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 513 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 122212636 is about 11054.9824061371. The cubic root of 122212636 is about 496.2555427476.

Adding to 122212636 its reverse (636212221), we get a palindrome (758424857).

The spelling of 122212636 in words is "one hundred twenty-two million, two hundred twelve thousand, six hundred thirty-six".