121136853 has 32 divisors (see below), whose sum is σ = 172368000. Its totient is φ = 75568896.

The previous prime is 121136833. The next prime is 121136861. The reversal of 121136853 is 358631121.

It is not a de Polignac number, because 121136853 - 2⁸ = 121136597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121136853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121136833) 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, 346923 + ... + 347271.

It is an arithmetic number, because the mean of its divisors is an integer number (5386500).

Almost surely, 2^121136853 is an apocalyptic number.

It is an amenable number.

121136853 is a deficient number, since it is larger than the sum of its proper divisors (51231147).

121136853 is a wasteful number, since it uses less digits than its factorization.

121136853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its digits is 4320, while the sum is 30.

The square root of 121136853 is about 11006.2188330053. The cubic root of 121136853 is about 494.7951442904.

Adding to 121136853 its reverse (358631121), we get a palindrome (479767974).

The spelling of 121136853 in words is "one hundred twenty-one million, one hundred thirty-six thousand, eight hundred fifty-three".