121906093 has 2 divisors, whose sum is σ = 121906094. Its totient is φ = 121906092.

The previous prime is 121906073. The next prime is 121906123. The reversal of 121906093 is 390609121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121594729 + 311364 = 11027^2 + 558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121906093 is a prime.

It is a super-2 number, since 2×121906093² = 29722191021049298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121906073) 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, 60953046 + 60953047.

It is an arithmetic number, because the mean of its divisors is an integer number (60953047).

Almost surely, 2^121906093 is an apocalyptic number.

It is an amenable number.

121906093 is a deficient number, since it is larger than the sum of its proper divisors (1).

121906093 is an equidigital number, since it uses as much as digits as its factorization.

121906093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 121906093 is about 11041.1092286962. The cubic root of 121906093 is about 495.8402800963.

The spelling of 121906093 in words is "one hundred twenty-one million, nine hundred six thousand, ninety-three".