121430223 has 6 divisors (see below), whose sum is σ = 175399224. Its totient is φ = 80953476.

The previous prime is 121430207. The next prime is 121430249. The reversal of 121430223 is 322034121.

121430223 is a `hidden beast` number, since 12 + 1 + 430 + 223 = 666.

It is not a de Polignac number, because 121430223 - 2⁴ = 121430207 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 121430196 and 121430205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121430423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6746115 + ... + 6746132.

It is an arithmetic number, because the mean of its divisors is an integer number (29233204).

Almost surely, 2^121430223 is an apocalyptic number.

121430223 is a deficient number, since it is larger than the sum of its proper divisors (53969001).

121430223 is a wasteful number, since it uses less digits than its factorization.

121430223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13492253 (or 13492250 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 121430223 is about 11019.5382389645. The cubic root of 121430223 is about 495.1942549484.

Adding to 121430223 its reverse (322034121), we get a palindrome (443464344).

The spelling of 121430223 in words is "one hundred twenty-one million, four hundred thirty thousand, two hundred twenty-three".