121202239 has 2 divisors, whose sum is σ = 121202240. Its totient is φ = 121202238.

The previous prime is 121202209. The next prime is 121202261. The reversal of 121202239 is 932202121.

It is an a-pointer prime, because the next prime (121202261) can be obtained adding 121202239 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121202239 is a prime.

It is a super-2 number, since 2×121202239² = 29379965477226242, 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 (121202209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601119 + 60601120.

It is an arithmetic number, because the mean of its divisors is an integer number (60601120).

Almost surely, 2^121202239 is an apocalyptic number.

121202239 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202239 is an equidigital number, since it uses as much as digits as its factorization.

121202239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 121202239 is about 11009.1888438704. The cubic root of 121202239 is about 494.8841534159.

The spelling of 121202239 in words is "one hundred twenty-one million, two hundred two thousand, two hundred thirty-nine".