121303533 has 16 divisors (see below), whose sum is σ = 174436416. Its totient is φ = 74538240.

The previous prime is 121303513. The next prime is 121303583. The reversal of 121303533 is 335303121.

It is not a de Polignac number, because 121303533 - 2¹⁰ = 121302509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30373 + ... + 34133.

It is an arithmetic number, because the mean of its divisors is an integer number (10902276).

Almost surely, 2^121303533 is an apocalyptic number.

121303533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121303533 is a deficient number, since it is larger than the sum of its proper divisors (53132883).

121303533 is a wasteful number, since it uses less digits than its factorization.

121303533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 121303533 is about 11013.7883128377. The cubic root of 121303533 is about 495.0219804544.

Adding to 121303533 its reverse (335303121), we get a palindrome (456606654).

The spelling of 121303533 in words is "one hundred twenty-one million, three hundred three thousand, five hundred thirty-three".