2111211021187 has 2 divisors, whose sum is σ = 2111211021188. Its totient is φ = 2111211021186.

The previous prime is 2111211021133. The next prime is 2111211021211. The reversal of 2111211021187 is 7811201121112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111211021187 - 2²³ = 2111202632579 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111211021107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055605510593 + 1055605510594.

It is an arithmetic number, because the mean of its divisors is an integer number (1055605510594).

Almost surely, 2^{2111211021187} is an apocalyptic number.

2111211021187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111211021187 is an equidigital number, since it uses as much as digits as its factorization.

2111211021187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 28.

Adding to 2111211021187 its reverse (7811201121112), we get a palindrome (9922412142299).

The spelling of 2111211021187 in words is "two trillion, one hundred eleven billion, two hundred eleven million, twenty-one thousand, one hundred eighty-seven".