121530535 has 24 divisors (see below), whose sum is σ = 179632080. Its totient is φ = 78430464.

The previous prime is 121530523. The next prime is 121530547. The reversal of 121530535 is 535035121.

121530535 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (121530523) and next prime (121530547).

It is not a de Polignac number, because 121530535 - 2¹⁵ = 121497767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10425 + ... + 18754.

It is an arithmetic number, because the mean of its divisors is an integer number (7484670).

Almost surely, 2^121530535 is an apocalyptic number.

121530535 is a deficient number, since it is larger than the sum of its proper divisors (58101545).

121530535 is a wasteful number, since it uses less digits than its factorization.

121530535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29215 (or 29208 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 121530535 is about 11024.0888512385. The cubic root of 121530535 is about 495.3305753603.

Adding to 121530535 its reverse (535035121), we get a palindrome (656565656).

The spelling of 121530535 in words is "one hundred twenty-one million, five hundred thirty thousand, five hundred thirty-five".