121445135 has 32 divisors (see below), whose sum is σ = 173187072. Its totient is φ = 80000640.

The previous prime is 121445119. The next prime is 121445141. The reversal of 121445135 is 531544121.

It is not a de Polignac number, because 121445135 - 2⁴ = 121445119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187382 + ... + 188028.

It is an arithmetic number, because the mean of its divisors is an integer number (5412096).

Almost surely, 2^121445135 is an apocalyptic number.

121445135 is a deficient number, since it is larger than the sum of its proper divisors (51741937).

121445135 is a wasteful number, since it uses less digits than its factorization.

121445135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its digits is 2400, while the sum is 26.

The square root of 121445135 is about 11020.2148345665. The cubic root of 121445135 is about 495.2145245713.

Adding to 121445135 its reverse (531544121), we get a palindrome (652989256).

The spelling of 121445135 in words is "one hundred twenty-one million, four hundred forty-five thousand, one hundred thirty-five".