121266133 has 4 divisors (see below), whose sum is σ = 121292640. Its totient is φ = 121239628.

The previous prime is 121266127. The next prime is 121266161. The reversal of 121266133 is 331662121.

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: 331662121 = 7 ⋅47380303.

It is a cyclic number.

It is not a de Polignac number, because 121266133 - 2¹⁷ = 121135061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121266098 and 121266107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121266163) 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, 4435 + ... + 16192.

It is an arithmetic number, because the mean of its divisors is an integer number (30323160).

Almost surely, 2^121266133 is an apocalyptic number.

It is an amenable number.

121266133 is a deficient number, since it is larger than the sum of its proper divisors (26507).

121266133 is an equidigital number, since it uses as much as digits as its factorization.

121266133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26506.

The product of its digits is 1296, while the sum is 25.

The square root of 121266133 is about 11012.0903102000. The cubic root of 121266133 is about 494.9711005813.

The spelling of 121266133 in words is "one hundred twenty-one million, two hundred sixty-six thousand, one hundred thirty-three".