121130401 has 6 divisors (see below), whose sum is σ = 140906850. Its totient is φ = 103826016.

The previous prime is 121130393. The next prime is 121130407. The reversal of 121130401 is 104031121.

It can be written as a sum of positive squares in only one way, i.e., 91699776 + 29430625 = 9576^2 + 5425^2 .

It is not a de Polignac number, because 121130401 - 2³ = 121130393 is a prime.

It is a super-3 number, since 3×121130401³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121130407) 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 5 ways as a sum of consecutive naturals, for example, 1235976 + ... + 1236073.

It is an arithmetic number, because the mean of its divisors is an integer number (23484475).

Almost surely, 2^121130401 is an apocalyptic number.

It is an amenable number.

121130401 is a deficient number, since it is larger than the sum of its proper divisors (19776449).

121130401 is an equidigital number, since it uses as much as digits as its factorization.

121130401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472063 (or 2472056 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121130401 is about 11005.9257220826. The cubic root of 121130401 is about 494.7863595293.

Adding to 121130401 its reverse (104031121), we get a palindrome (225161522).

The spelling of 121130401 in words is "one hundred twenty-one million, one hundred thirty thousand, four hundred one".