121134401 has 4 divisors (see below), whose sum is σ = 128259972. Its totient is φ = 114008832.

The previous prime is 121134389. The next prime is 121134407. The reversal of 121134401 is 104431121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83631025 + 37503376 = 9145^2 + 6124^2 .

It is a cyclic number.

It is not a de Polignac number, because 121134401 - 2²² = 116940097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7125553 = 121134401 / (1 + 2 + 1 + 1 + 3 + 4 + 4 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121134401.

It is not an unprimeable number, because it can be changed into a prime (121134407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3562760 + ... + 3562793.

It is an arithmetic number, because the mean of its divisors is an integer number (32064993).

Almost surely, 2^121134401 is an apocalyptic number.

It is an amenable number.

121134401 is a deficient number, since it is larger than the sum of its proper divisors (7125571).

121134401 is an equidigital number, since it uses as much as digits as its factorization.

121134401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7125570.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 121134401 is about 11006.1074408712. The cubic root of 121134401 is about 494.7918057912.

Adding to 121134401 its reverse (104431121), we get a palindrome (225565522).

The spelling of 121134401 in words is "one hundred twenty-one million, one hundred thirty-four thousand, four hundred one".