121005041 has 4 divisors (see below), whose sum is σ = 121027572. Its totient is φ = 120982512.

The previous prime is 121005013. The next prime is 121005043. The reversal of 121005041 is 140500121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140500121 = 17 ⋅8264713.

It can be written as a sum of positive squares in 2 ways, for example, as 120912016 + 93025 = 10996^2 + 305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121005041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121005043) 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, 1991 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (30256893).

Almost surely, 2^121005041 is an apocalyptic number.

It is an amenable number.

121005041 is a deficient number, since it is larger than the sum of its proper divisors (22531).

121005041 is an equidigital number, since it uses as much as digits as its factorization.

121005041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22530.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 121005041 is about 11000.2291339772. The cubic root of 121005041 is about 494.6156128870.

Adding to 121005041 its reverse (140500121), we get a palindrome (261505162).

It can be divided in two parts, 12100 and 5041, that multiplied together give a square (60996100 = 7810²).

The spelling of 121005041 in words is "one hundred twenty-one million, five thousand, forty-one".