2221131133211 has 2 divisors, whose sum is σ = 2221131133212. Its totient is φ = 2221131133210.

The previous prime is 2221131133201. The next prime is 2221131133213. The reversal of 2221131133211 is 1123311311222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221131133211 is a prime.

It is a Sophie Germain prime.

Together with 2221131133213, 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 (2221131133213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110565566605 + 1110565566606.

It is an arithmetic number, because the mean of its divisors is an integer number (1110565566606).

Almost surely, 2^{2221131133211} is an apocalyptic number.

2221131133211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221131133211 is an equidigital number, since it uses as much as digits as its factorization.

2221131133211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

Adding to 2221131133211 its reverse (1123311311222), we get a palindrome (3344442444433).

The spelling of 2221131133211 in words is "two trillion, two hundred twenty-one billion, one hundred thirty-one million, one hundred thirty-three thousand, two hundred eleven".