121850173 has 4 divisors (see below), whose sum is σ = 128263360. Its totient is φ = 115436988.

The previous prime is 121850149. The next prime is 121850189. The reversal of 121850173 is 371058121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 371058121 = 7 ⋅53008303.

It is a cyclic number.

It is not a de Polignac number, because 121850173 - 2⁹ = 121849661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121850143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3206565 + ... + 3206602.

It is an arithmetic number, because the mean of its divisors is an integer number (32065840).

Almost surely, 2^121850173 is an apocalyptic number.

It is an amenable number.

121850173 is a deficient number, since it is larger than the sum of its proper divisors (6413187).

121850173 is an equidigital number, since it uses as much as digits as its factorization.

121850173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6413186.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 121850173 is about 11038.5765839623. The cubic root of 121850173 is about 495.7644522507.

The spelling of 121850173 in words is "one hundred twenty-one million, eight hundred fifty thousand, one hundred seventy-three".