121132243 has 4 divisors (see below), whose sum is σ = 121437760. Its totient is φ = 120826728.

The previous prime is 121132241. The next prime is 121132267. The reversal of 121132243 is 342231121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121132243 - 2¹ = 121132241 is a prime.

It is a super-2 number, since 2×121132243² = 29346040588422098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121132243.

It is not an unprimeable number, because it can be changed into a prime (121132241) 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, 152163 + ... + 152956.

It is an arithmetic number, because the mean of its divisors is an integer number (30359440).

Almost surely, 2^121132243 is an apocalyptic number.

121132243 is a deficient number, since it is larger than the sum of its proper divisors (305517).

121132243 is an equidigital number, since it uses as much as digits as its factorization.

121132243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305516.

The product of its digits is 288, while the sum is 19.

The square root of 121132243 is about 11006.0094039575. The cubic root of 121132243 is about 494.7888675478.

Adding to 121132243 its reverse (342231121), we get a palindrome (463363364).

The spelling of 121132243 in words is "one hundred twenty-one million, one hundred thirty-two thousand, two hundred forty-three".