121212132211 has 6 divisors (see below), whose sum is σ = 125248333236. Its totient is φ = 117302062500.

The previous prime is 121212132203. The next prime is 121212132247. The reversal of 121212132211 is 112231212121.

It is not a de Polignac number, because 121212132211 - 2³ = 121212132203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212132611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63064665 + ... + 63066586.

It is an arithmetic number, because the mean of its divisors is an integer number (20874722206).

Almost surely, 2^121212132211 is an apocalyptic number.

121212132211 is a deficient number, since it is larger than the sum of its proper divisors (4036201025).

121212132211 is an equidigital number, since it uses as much as digits as its factorization.

121212132211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126131313 (or 126131282 counting only the distinct ones).

The product of its digits is 96, while the sum is 19.

Adding to 121212132211 its reverse (112231212121), we get a palindrome (233443344332).

The spelling of 121212132211 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred thirty-two thousand, two hundred eleven".