121155673 has 2 divisors, whose sum is σ = 121155674. Its totient is φ = 121155672.

The previous prime is 121155667. The next prime is 121155709. The reversal of 121155673 is 376551121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119421184 + 1734489 = 10928^2 + 1317^2 .

It is an emirp because it is prime and its reverse (376551121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121155673 - 2⁵ = 121155641 is a prime.

It is not a weakly prime, because it can be changed into another prime (121155623) 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, 60577836 + 60577837.

It is an arithmetic number, because the mean of its divisors is an integer number (60577837).

Almost surely, 2^121155673 is an apocalyptic number.

It is an amenable number.

121155673 is a deficient number, since it is larger than the sum of its proper divisors (1).

121155673 is an equidigital number, since it uses as much as digits as its factorization.

121155673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 31.

The square root of 121155673 is about 11007.0737709893. The cubic root of 121155673 is about 494.8207669978.

The spelling of 121155673 in words is "one hundred twenty-one million, one hundred fifty-five thousand, six hundred seventy-three".