121045435533 has 40 divisors (see below), whose sum is σ = 197311710816. Its totient is φ = 73341352800.

The previous prime is 121045435513. The next prime is 121045435549. The reversal of 121045435533 is 335534540121.

121045435533 is a `hidden beast` number, since 1 + 2 + 104 + 543 + 5 + 5 + 3 + 3 = 666.

It is not a de Polignac number, because 121045435533 - 2¹⁶ = 121045369997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121045435513) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3780610 + ... + 3812492.

Almost surely, 2^121045435533 is an apocalyptic number.

It is an amenable number.

121045435533 is a deficient number, since it is larger than the sum of its proper divisors (76266275283).

121045435533 is a wasteful number, since it uses less digits than its factorization.

121045435533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36167 (or 36158 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 121045435533 its reverse (335534540121), we get a palindrome (456579975654).

The spelling of 121045435533 in words is "one hundred twenty-one billion, forty-five million, four hundred thirty-five thousand, five hundred thirty-three".