121536533 has 4 divisors (see below), whose sum is σ = 124363008. Its totient is φ = 118710060.

The previous prime is 121536529. The next prime is 121536551. The reversal of 121536533 is 335635121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121536533 - 2² = 121536529 is a prime.

It is a super-2 number, since 2×121536533² = 29542257707320178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121536496 and 121536505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121536563) 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, 1413173 + ... + 1413258.

It is an arithmetic number, because the mean of its divisors is an integer number (31090752).

Almost surely, 2^121536533 is an apocalyptic number.

It is an amenable number.

121536533 is a deficient number, since it is larger than the sum of its proper divisors (2826475).

121536533 is an equidigital number, since it uses as much as digits as its factorization.

121536533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826474.

The product of its digits is 8100, while the sum is 29.

The square root of 121536533 is about 11024.3608885051. The cubic root of 121536533 is about 495.3387240502.

The spelling of 121536533 in words is "one hundred twenty-one million, five hundred thirty-six thousand, five hundred thirty-three".