121223001 has 4 divisors (see below), whose sum is σ = 161630672. Its totient is φ = 80815332.

The previous prime is 121222999. The next prime is 121223017. The reversal of 121223001 is 100322121.

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 not a de Polignac number, because 121223001 - 2¹ = 121222999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121223071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20203831 + ... + 20203836.

It is an arithmetic number, because the mean of its divisors is an integer number (40407668).

Almost surely, 2^121223001 is an apocalyptic number.

It is an amenable number.

121223001 is a deficient number, since it is larger than the sum of its proper divisors (40407671).

121223001 is an equidigital number, since it uses as much as digits as its factorization.

121223001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40407670.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 121223001 is about 11010.1317430810. The cubic root of 121223001 is about 494.9124097646.

Adding to 121223001 its reverse (100322121), we get a palindrome (221545122).

The spelling of 121223001 in words is "one hundred twenty-one million, two hundred twenty-three thousand, one".