1212041122211 has 2 divisors, whose sum is σ = 1212041122212. Its totient is φ = 1212041122210.

The previous prime is 1212041122199. The next prime is 1212041122213. The reversal of 1212041122211 is 1122211402121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212041122211 is a prime.

Together with 1212041122213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1212041122213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606020561105 + 606020561106.

It is an arithmetic number, because the mean of its divisors is an integer number (606020561106).

Almost surely, 2^{1212041122211} is an apocalyptic number.

1212041122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212041122211 is an equidigital number, since it uses as much as digits as its factorization.

1212041122211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 1212041122211 its reverse (1122211402121), we get a palindrome (2334252524332).

The spelling of 1212041122211 in words is "one trillion, two hundred twelve billion, forty-one million, one hundred twenty-two thousand, two hundred eleven".