121213241 has 2 divisors, whose sum is σ = 121213242. Its totient is φ = 121213240.

The previous prime is 121213229. The next prime is 121213271. The reversal of 121213241 is 142312121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120012025 + 1201216 = 10955^2 + 1096^2 .

It is a cyclic number.

It is not a de Polignac number, because 121213241 - 2¹⁸ = 120951097 is a prime.

It is not a weakly prime, because it can be changed into another prime (121213201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606620 + 60606621.

It is an arithmetic number, because the mean of its divisors is an integer number (60606621).

Almost surely, 2^121213241 is an apocalyptic number.

It is an amenable number.

121213241 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213241 is an equidigital number, since it uses as much as digits as its factorization.

121213241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 121213241 is about 11009.6885060387. The cubic root of 121213241 is about 494.8991271512.

Adding to 121213241 its reverse (142312121), we get a palindrome (263525362).

The spelling of 121213241 in words is "one hundred twenty-one million, two hundred thirteen thousand, two hundred forty-one".