11220100021187 has 2 divisors, whose sum is σ = 11220100021188. Its totient is φ = 11220100021186.

The previous prime is 11220100021171. The next prime is 11220100021201. The reversal of 11220100021187 is 78112000102211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11220100021187 - 2⁴ = 11220100021171 is a prime.

It is not a weakly prime, because it can be changed into another prime (11220100021087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610050010593 + 5610050010594.

It is an arithmetic number, because the mean of its divisors is an integer number (5610050010594).

Almost surely, 2^{11220100021187} is an apocalyptic number.

11220100021187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220100021187 is an equidigital number, since it uses as much as digits as its factorization.

11220100021187 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 26.

Adding to 11220100021187 its reverse (78112000102211), we get a palindrome (89332100123398).

The spelling of 11220100021187 in words is "eleven trillion, two hundred twenty billion, one hundred million, twenty-one thousand, one hundred eighty-seven".