121402331 has 2 divisors, whose sum is σ = 121402332. Its totient is φ = 121402330.

The previous prime is 121402301. The next prime is 121402367. The reversal of 121402331 is 133204121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121402331 - 2¹⁰ = 121401307 is a prime.

It is a super-2 number, since 2×121402331² = 29477051944467122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121402301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60701165 + 60701166.

It is an arithmetic number, because the mean of its divisors is an integer number (60701166).

Almost surely, 2^121402331 is an apocalyptic number.

121402331 is a deficient number, since it is larger than the sum of its proper divisors (1).

121402331 is an equidigital number, since it uses as much as digits as its factorization.

121402331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121402331 is about 11018.2725960107. The cubic root of 121402331 is about 495.1563373815.

Adding to 121402331 its reverse (133204121), we get a palindrome (254606452).

The spelling of 121402331 in words is "one hundred twenty-one million, four hundred two thousand, three hundred thirty-one".