102544221011 has 2 divisors, whose sum is σ = 102544221012. Its totient is φ = 102544221010.

The previous prime is 102544220981. The next prime is 102544221029. The reversal of 102544221011 is 110122445201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102544221011 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (102544221041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51272110505 + 51272110506.

It is an arithmetic number, because the mean of its divisors is an integer number (51272110506).

Almost surely, 2^102544221011 is an apocalyptic number.

102544221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

102544221011 is an equidigital number, since it uses as much as digits as its factorization.

102544221011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 102544221011 its reverse (110122445201), we get a palindrome (212666666212).

The spelling of 102544221011 in words is "one hundred two billion, five hundred forty-four million, two hundred twenty-one thousand, eleven".