121388801 has 4 divisors (see below), whose sum is σ = 121425492. Its totient is φ = 121352112.

The previous prime is 121388767. The next prime is 121388819. The reversal of 121388801 is 108883121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108883121 = 2251 ⋅48371.

It can be written as a sum of positive squares in 2 ways, for example, as 58599025 + 62789776 = 7655^2 + 7924^2 .

It is a cyclic number.

It is not a de Polignac number, because 121388801 - 2²⁶ = 54279937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121388821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12830 + ... + 20183.

It is an arithmetic number, because the mean of its divisors is an integer number (30356373).

Almost surely, 2^121388801 is an apocalyptic number.

It is an amenable number.

121388801 is a deficient number, since it is larger than the sum of its proper divisors (36691).

121388801 is an equidigital number, since it uses as much as digits as its factorization.

121388801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36690.

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 121388801 is about 11017.6585988131. The cubic root of 121388801 is about 495.1379420342.

The spelling of 121388801 in words is "one hundred twenty-one million, three hundred eighty-eight thousand, eight hundred one".