121836269 has 2 divisors, whose sum is σ = 121836270. Its totient is φ = 121836268.

The previous prime is 121836251. The next prime is 121836271. The reversal of 121836269 is 962638121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96786244 + 25050025 = 9838^2 + 5005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121836269 is a prime.

It is a super-2 number, since 2×121836269² = 29688152887680722, which contains 22 as substring.

Together with 121836271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121836769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60918134 + 60918135.

It is an arithmetic number, because the mean of its divisors is an integer number (60918135).

Almost surely, 2^121836269 is an apocalyptic number.

It is an amenable number.

121836269 is a deficient number, since it is larger than the sum of its proper divisors (1).

121836269 is an equidigital number, since it uses as much as digits as its factorization.

121836269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 121836269 is about 11037.9467746497. The cubic root of 121836269 is about 495.7455947446.

The spelling of 121836269 in words is "one hundred twenty-one million, eight hundred thirty-six thousand, two hundred sixty-nine".