121532001 has 4 divisors (see below), whose sum is σ = 162042672. Its totient is φ = 81021332.

The previous prime is 121531957. The next prime is 121532017. The reversal of 121532001 is 100235121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121532001 - 2⁶ = 121531937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121532041) 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, 20255331 + ... + 20255336.

It is an arithmetic number, because the mean of its divisors is an integer number (40510668).

Almost surely, 2^121532001 is an apocalyptic number.

It is an amenable number.

121532001 is a deficient number, since it is larger than the sum of its proper divisors (40510671).

121532001 is an equidigital number, since it uses as much as digits as its factorization.

121532001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40510670.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 121532001 is about 11024.1553417938. The cubic root of 121532001 is about 495.3325670455.

Adding to 121532001 its reverse (100235121), we get a palindrome (221767122).

The spelling of 121532001 in words is "one hundred twenty-one million, five hundred thirty-two thousand, one".