11112021222187 has 2 divisors, whose sum is σ = 11112021222188. Its totient is φ = 11112021222186.

The previous prime is 11112021222151. The next prime is 11112021222217. The reversal of 11112021222187 is 78122212021111.

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-11112021222187 is a prime.

It is not a weakly prime, because it can be changed into another prime (11112021232187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556010611093 + 5556010611094.

It is an arithmetic number, because the mean of its divisors is an integer number (5556010611094).

Almost surely, 2^{11112021222187} is an apocalyptic number.

11112021222187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112021222187 is an equidigital number, since it uses as much as digits as its factorization.

11112021222187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 31.

Adding to 11112021222187 its reverse (78122212021111), we get a palindrome (89234233243298).

The spelling of 11112021222187 in words is "eleven trillion, one hundred twelve billion, twenty-one million, two hundred twenty-two thousand, one hundred eighty-seven".