121127641 has 4 divisors (see below), whose sum is σ = 127502800. Its totient is φ = 114752484.

The previous prime is 121127621. The next prime is 121127681. The reversal of 121127641 is 146721121.

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 121127641 - 2¹¹ = 121125593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121127621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3187551 + ... + 3187588.

It is an arithmetic number, because the mean of its divisors is an integer number (31875700).

Almost surely, 2^121127641 is an apocalyptic number.

It is an amenable number.

121127641 is a deficient number, since it is larger than the sum of its proper divisors (6375159).

121127641 is an equidigital number, since it uses as much as digits as its factorization.

121127641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375158.

The product of its digits is 672, while the sum is 25.

The square root of 121127641 is about 11005.8003343691. The cubic root of 121127641 is about 494.7826015387.

Adding to 121127641 its reverse (146721121), we get a palindrome (267848762).

The spelling of 121127641 in words is "one hundred twenty-one million, one hundred twenty-seven thousand, six hundred forty-one".