121768133 has 4 divisors (see below), whose sum is σ = 122107680. Its totient is φ = 121428588.

The previous prime is 121768123. The next prime is 121768177. The reversal of 121768133 is 331867121.

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: 331867121 = 31 ⋅10705391.

It is a cyclic number.

It is not a de Polignac number, because 121768133 - 2⁶ = 121768069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121768133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121768103) 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, 169235 + ... + 169952.

It is an arithmetic number, because the mean of its divisors is an integer number (30526920).

Almost surely, 2^121768133 is an apocalyptic number.

It is an amenable number.

121768133 is a deficient number, since it is larger than the sum of its proper divisors (339547).

121768133 is an equidigital number, since it uses as much as digits as its factorization.

121768133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339546.

The product of its digits is 6048, while the sum is 32.

The square root of 121768133 is about 11034.8598994278. The cubic root of 121768133 is about 495.6531635367.

The spelling of 121768133 in words is "one hundred twenty-one million, seven hundred sixty-eight thousand, one hundred thirty-three".