121711669 has 2 divisors, whose sum is σ = 121711670. Its totient is φ = 121711668.

The previous prime is 121711651. The next prime is 121711703. The reversal of 121711669 is 966117121.

It is an a-pointer prime, because the next prime (121711703) can be obtained adding 121711669 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119574225 + 2137444 = 10935^2 + 1462^2 .

It is a cyclic number.

It is not a de Polignac number, because 121711669 - 2¹⁷ = 121580597 is a prime.

It is a super-2 number, since 2×121711669² = 29627460741531122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121711609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60855834 + 60855835.

It is an arithmetic number, because the mean of its divisors is an integer number (60855835).

Almost surely, 2^121711669 is an apocalyptic number.

It is an amenable number.

121711669 is a deficient number, since it is larger than the sum of its proper divisors (1).

121711669 is an equidigital number, since it uses as much as digits as its factorization.

121711669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 34.

The square root of 121711669 is about 11032.3011652148. The cubic root of 121711669 is about 495.5765400764.

The spelling of 121711669 in words is "one hundred twenty-one million, seven hundred eleven thousand, six hundred sixty-nine".