121869229 has 4 divisors (see below), whose sum is σ = 122034880. Its totient is φ = 121703580.

The previous prime is 121869227. The next prime is 121869233. The reversal of 121869229 is 922968121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121869229 - 2¹ = 121869227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121869191 and 121869200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121869221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81717 + ... + 83194.

It is an arithmetic number, because the mean of its divisors is an integer number (30508720).

Almost surely, 2^121869229 is an apocalyptic number.

It is an amenable number.

121869229 is a deficient number, since it is larger than the sum of its proper divisors (165651).

121869229 is an equidigital number, since it uses as much as digits as its factorization.

121869229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165650.

The product of its digits is 31104, while the sum is 40.

The square root of 121869229 is about 11039.4397049850. The cubic root of 121869229 is about 495.7902949030.

The spelling of 121869229 in words is "one hundred twenty-one million, eight hundred sixty-nine thousand, two hundred twenty-nine".