121330204211 has 4 divisors (see below), whose sum is σ = 121331103000. Its totient is φ = 121329305424.

The previous prime is 121330204183. The next prime is 121330204241. The reversal of 121330204211 is 112402033121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121330204211 - 2¹⁸ = 121329942067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121330204241) 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, 201221 + ... + 532118.

It is an arithmetic number, because the mean of its divisors is an integer number (30332775750).

Almost surely, 2^121330204211 is an apocalyptic number.

121330204211 is a deficient number, since it is larger than the sum of its proper divisors (898789).

121330204211 is an equidigital number, since it uses as much as digits as its factorization.

121330204211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898788.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121330204211 its reverse (112402033121), we get a palindrome (233732237332).

The spelling of 121330204211 in words is "one hundred twenty-one billion, three hundred thirty million, two hundred four thousand, two hundred eleven".