121232127 has 4 divisors (see below), whose sum is σ = 161642840. Its totient is φ = 80821416.

The previous prime is 121232123. The next prime is 121232143. The reversal of 121232127 is 721232121.

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

It is not a de Polignac number, because 121232127 - 2² = 121232123 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232123) 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, 20205352 + ... + 20205357.

It is an arithmetic number, because the mean of its divisors is an integer number (40410710).

Almost surely, 2^121232127 is an apocalyptic number.

121232127 is a deficient number, since it is larger than the sum of its proper divisors (40410713).

121232127 is an equidigital number, since it uses as much as digits as its factorization.

121232127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40410712.

The product of its digits is 336, while the sum is 21.

The square root of 121232127 is about 11010.5461717392. The cubic root of 121232127 is about 494.9248289075.

Adding to 121232127 its reverse (721232121), we get a palindrome (842464248).

The spelling of 121232127 in words is "one hundred twenty-one million, two hundred thirty-two thousand, one hundred twenty-seven".