121000210321 has 4 divisors (see below), whose sum is σ = 124903442944. Its totient is φ = 117096977700.

The previous prime is 121000210283. The next prime is 121000210339. The reversal of 121000210321 is 123012000121.

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 121000210321 - 2⁷ = 121000210193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121000210621) 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, 1951616265 + ... + 1951616326.

It is an arithmetic number, because the mean of its divisors is an integer number (31225860736).

Almost surely, 2^121000210321 is an apocalyptic number.

It is an amenable number.

121000210321 is a deficient number, since it is larger than the sum of its proper divisors (3903232623).

121000210321 is an equidigital number, since it uses as much as digits as its factorization.

121000210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903232622.

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

Adding to 121000210321 its reverse (123012000121), we get a palindrome (244012210442).

The spelling of 121000210321 in words is "one hundred twenty-one billion, two hundred ten thousand, three hundred twenty-one".