121132223 has 4 divisors (see below), whose sum is σ = 122308368. Its totient is φ = 119956080.

The previous prime is 121132213. The next prime is 121132241. The reversal of 121132223 is 322231121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322231121 = 43 ⋅7493747.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121132223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121132213) 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, 587918 + ... + 588123.

It is an arithmetic number, because the mean of its divisors is an integer number (30577092).

Almost surely, 2^121132223 is an apocalyptic number.

121132223 is a deficient number, since it is larger than the sum of its proper divisors (1176145).

121132223 is a wasteful number, since it uses less digits than its factorization.

121132223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176144.

The product of its digits is 144, while the sum is 17.

The square root of 121132223 is about 11006.0084953629. The cubic root of 121132223 is about 494.7888403165.

Adding to 121132223 its reverse (322231121), we get a palindrome (443363344).

The spelling of 121132223 in words is "one hundred twenty-one million, one hundred thirty-two thousand, two hundred twenty-three".