121003231 has 2 divisors, whose sum is σ = 121003232. Its totient is φ = 121003230.

The previous prime is 121003123. The next prime is 121003249. The reversal of 121003231 is 132300121.

Together with previous prime (121003123) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121003231 - 2²¹ = 118906079 is a prime.

It is a super-2 number, since 2×121003231² = 29283563824878722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121003271) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501615 + 60501616.

It is an arithmetic number, because the mean of its divisors is an integer number (60501616).

Almost surely, 2^121003231 is an apocalyptic number.

121003231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121003231 is an equidigital number, since it uses as much as digits as its factorization.

121003231 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 13.

The square root of 121003231 is about 11000.1468626560. The cubic root of 121003231 is about 494.6131467123.

Adding to 121003231 its reverse (132300121), we get a palindrome (253303352).

The spelling of 121003231 in words is "one hundred twenty-one million, three thousand, two hundred thirty-one".