121667153 has 2 divisors, whose sum is σ = 121667154. Its totient is φ = 121667152.

The previous prime is 121667111. The next prime is 121667159. The reversal of 121667153 is 351766121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64770304 + 56896849 = 8048^2 + 7543^2 .

It is a cyclic number.

It is not a de Polignac number, because 121667153 - 2²⁶ = 54558289 is a prime.

It is a super-2 number, since 2×121667153² = 29605792238250818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121667159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60833576 + 60833577.

It is an arithmetic number, because the mean of its divisors is an integer number (60833577).

Almost surely, 2^121667153 is an apocalyptic number.

It is an amenable number.

121667153 is a deficient number, since it is larger than the sum of its proper divisors (1).

121667153 is an equidigital number, since it uses as much as digits as its factorization.

121667153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 121667153 is about 11030.2834505737. The cubic root of 121667153 is about 495.5161137272.

The spelling of 121667153 in words is "one hundred twenty-one million, six hundred sixty-seven thousand, one hundred fifty-three".