10221220101187 has 2 divisors, whose sum is σ = 10221220101188. Its totient is φ = 10221220101186.

The previous prime is 10221220101133. The next prime is 10221220101203. The reversal of 10221220101187 is 78110102212201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10221220101187 - 2⁴³ = 1425127078979 is a prime.

It is not a weakly prime, because it can be changed into another prime (10221220101887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110610050593 + 5110610050594.

It is an arithmetic number, because the mean of its divisors is an integer number (5110610050594).

Almost surely, 2^{10221220101187} is an apocalyptic number.

10221220101187 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221220101187 is an equidigital number, since it uses as much as digits as its factorization.

10221220101187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 28.

Adding to 10221220101187 its reverse (78110102212201), we get a palindrome (88331322313388).

The spelling of 10221220101187 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty million, one hundred one thousand, one hundred eighty-seven".