121532801 has 12 divisors (see below), whose sum is σ = 133769340. Its totient is φ = 110335680.

The previous prime is 121532783. The next prime is 121532821. The reversal of 121532801 is 108235121.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 86118400 + 35414401 = 9280^2 + 5951^2 .

It is not a de Polignac number, because 121532801 - 2⁶ = 121532737 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121532821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4415 + ... + 16203.

It is an arithmetic number, because the mean of its divisors is an integer number (11147445).

Almost surely, 2^121532801 is an apocalyptic number.

It is an amenable number.

121532801 is a deficient number, since it is larger than the sum of its proper divisors (12236539).

121532801 is a wasteful number, since it uses less digits than its factorization.

121532801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11876 (or 11863 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 121532801 is about 11024.1916256930. The cubic root of 121532801 is about 495.3336539065. Note that the first 3 decimals are identical.

Adding to 121532801 its reverse (108235121), we get a palindrome (229767922).

The spelling of 121532801 in words is "one hundred twenty-one million, five hundred thirty-two thousand, eight hundred one".