121763109 has 16 divisors (see below), whose sum is σ = 175859712. Its totient is φ = 74493888.

The previous prime is 121763087. The next prime is 121763113. The reversal of 121763109 is 901367121.

It is not a de Polignac number, because 121763109 - 2¹¹ = 121761061 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121763309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2277 + ... + 15770.

It is an arithmetic number, because the mean of its divisors is an integer number (10991232).

Almost surely, 2^121763109 is an apocalyptic number.

It is an amenable number.

121763109 is a deficient number, since it is larger than the sum of its proper divisors (54096603).

121763109 is a wasteful number, since it uses less digits than its factorization.

121763109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18236.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 121763109 is about 11034.6322548602. The cubic root of 121763109 is about 495.6463467676.

It can be divided in two parts, 121 and 763109, that added together give a triangular number (763230 = T₁₂₃₅).

The spelling of 121763109 in words is "one hundred twenty-one million, seven hundred sixty-three thousand, one hundred nine".