121302636 has 96 divisors (see below), whose sum is σ = 355622400. Its totient is φ = 31977792.

The previous prime is 121302619. The next prime is 121302691. The reversal of 121302636 is 636203121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52375 + ... + 54641.

It is an arithmetic number, because the mean of its divisors is an integer number (3704400).

Almost surely, 2^121302636 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 121302636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177811200).

121302636 is an abundant number, since it is smaller than the sum of its proper divisors (234319764).

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

121302636 is a wasteful number, since it uses less digits than its factorization.

121302636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 121302636 is about 11013.7475910791. The cubic root of 121302636 is about 495.0207602761.

Adding to 121302636 its reverse (636203121), we get a palindrome (757505757).

The spelling of 121302636 in words is "one hundred twenty-one million, three hundred two thousand, six hundred thirty-six".