121321131011 has 2 divisors, whose sum is σ = 121321131012. Its totient is φ = 121321131010.

The previous prime is 121321130927. The next prime is 121321131109. The reversal of 121321131011 is 110131123121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121321131011 - 2¹⁰ = 121321129987 is a prime.

It is not a weakly prime, because it can be changed into another prime (121321131511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660565505 + 60660565506.

It is an arithmetic number, because the mean of its divisors is an integer number (60660565506).

Almost surely, 2^121321131011 is an apocalyptic number.

121321131011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121321131011 is an equidigital number, since it uses as much as digits as its factorization.

121321131011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 121321131011 its reverse (110131123121), we get a palindrome (231452254132).

The spelling of 121321131011 in words is "one hundred twenty-one billion, three hundred twenty-one million, one hundred thirty-one thousand, eleven".