121254533 has 4 divisors (see below), whose sum is σ = 122915628. Its totient is φ = 119593440.

The previous prime is 121254521. The next prime is 121254541. The reversal of 121254533 is 335452121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100661089 + 20593444 = 10033^2 + 4538^2 .

It is a cyclic number.

It is not a de Polignac number, because 121254533 - 2⁸ = 121254277 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121254503) 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 in 3 ways as a sum of consecutive naturals, for example, 830438 + ... + 830583.

It is an arithmetic number, because the mean of its divisors is an integer number (30728907).

Almost surely, 2^121254533 is an apocalyptic number.

It is an amenable number.

121254533 is a deficient number, since it is larger than the sum of its proper divisors (1661095).

121254533 is an equidigital number, since it uses as much as digits as its factorization.

121254533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661094.

The product of its digits is 3600, while the sum is 26.

The square root of 121254533 is about 11011.5636037758. The cubic root of 121254533 is about 494.9553175326.

The spelling of 121254533 in words is "one hundred twenty-one million, two hundred fifty-four thousand, five hundred thirty-three".