121320535 has 16 divisors (see below), whose sum is σ = 166651200. Its totient is φ = 83056896.

The previous prime is 121320527. The next prime is 121320539. The reversal of 121320535 is 535023121.

It is a cyclic number.

It is not a de Polignac number, because 121320535 - 2³ = 121320527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320539) 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, 22371 + ... + 27259.

It is an arithmetic number, because the mean of its divisors is an integer number (10415700).

Almost surely, 2^121320535 is an apocalyptic number.

121320535 is a deficient number, since it is larger than the sum of its proper divisors (45330665).

121320535 is an equidigital number, since it uses as much as digits as its factorization.

121320535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 121320535 is about 11014.5601364739. The cubic root of 121320535 is about 495.0451069326.

Adding to 121320535 its reverse (535023121), we get a palindrome (656343656).

The spelling of 121320535 in words is "one hundred twenty-one million, three hundred twenty thousand, five hundred thirty-five".