121301231 has 2 divisors, whose sum is σ = 121301232. Its totient is φ = 121301230.

The previous prime is 121301221. The next prime is 121301249. The reversal of 121301231 is 132103121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121301231 is a prime.

It is a super-2 number, since 2×121301231² = 29427977284230722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121301221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60650615 + 60650616.

It is an arithmetic number, because the mean of its divisors is an integer number (60650616).

Almost surely, 2^121301231 is an apocalyptic number.

121301231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121301231 is an equidigital number, since it uses as much as digits as its factorization.

121301231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 121301231 is about 11013.6838069739. The cubic root of 121301231 is about 495.0188490595.

Adding to 121301231 its reverse (132103121), we get a palindrome (253404352).

The spelling of 121301231 in words is "one hundred twenty-one million, three hundred one thousand, two hundred thirty-one".