121164445 has 4 divisors (see below), whose sum is σ = 145397340. Its totient is φ = 96931552.

The previous prime is 121164401. The next prime is 121164467. The reversal of 121164445 is 544461121.

121164445 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544461121 = 13633 ⋅39937.

It can be written as a sum of positive squares in 2 ways, for example, as 83942244 + 37222201 = 9162^2 + 6101^2 .

It is a cyclic number.

It is not a de Polignac number, because 121164445 - 2¹³ = 121156253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12116440 + ... + 12116449.

It is an arithmetic number, because the mean of its divisors is an integer number (36349335).

Almost surely, 2^121164445 is an apocalyptic number.

It is an amenable number.

121164445 is a deficient number, since it is larger than the sum of its proper divisors (24232895).

121164445 is an equidigital number, since it uses as much as digits as its factorization.

121164445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24232894.

The product of its digits is 3840, while the sum is 28.

The square root of 121164445 is about 11007.4722348049. The cubic root of 121164445 is about 494.8327088324.

It can be divided in two parts, 12116 and 4445, that added together give a palindrome (16561).

The spelling of 121164445 in words is "one hundred twenty-one million, one hundred sixty-four thousand, four hundred forty-five".