121092161 has 2 divisors, whose sum is σ = 121092162. Its totient is φ = 121092160.

The previous prime is 121092143. The next prime is 121092193. The reversal of 121092161 is 161290121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62094400 + 58997761 = 7880^2 + 7681^2 .

It is an emirp because it is prime and its reverse (161290121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121092161 - 2¹⁰ = 121091137 is a prime.

It is a super-2 number, since 2×121092161² = 29326622911299842, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (121092761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60546080 + 60546081.

It is an arithmetic number, because the mean of its divisors is an integer number (60546081).

Almost surely, 2^121092161 is an apocalyptic number.

It is an amenable number.

121092161 is a deficient number, since it is larger than the sum of its proper divisors (1).

121092161 is an equidigital number, since it uses as much as digits as its factorization.

121092161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 121092161 is about 11004.1883389917. The cubic root of 121092161 is about 494.7342872127.

The spelling of 121092161 in words is "one hundred twenty-one million, ninety-two thousand, one hundred sixty-one".