121330131211 has 4 divisors (see below), whose sum is σ = 121330904800. Its totient is φ = 121329357624.

The previous prime is 121330131187. The next prime is 121330131259. The reversal of 121330131211 is 112131033121.

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 121330131211 - 2²¹ = 121328034059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121330131271) 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, 58851 + ... + 496108.

It is an arithmetic number, because the mean of its divisors is an integer number (30332726200).

Almost surely, 2^121330131211 is an apocalyptic number.

121330131211 is a deficient number, since it is larger than the sum of its proper divisors (773589).

121330131211 is an equidigital number, since it uses as much as digits as its factorization.

121330131211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773588.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 121330131211 its reverse (112131033121), we get a palindrome (233461164332).

The spelling of 121330131211 in words is "one hundred twenty-one billion, three hundred thirty million, one hundred thirty-one thousand, two hundred eleven".