102221121011 has 2 divisors, whose sum is σ = 102221121012. Its totient is φ = 102221121010.

The previous prime is 102221120959. The next prime is 102221121049. The reversal of 102221121011 is 110121122201.

It is a strong prime.

It is an emirp because it is prime and its reverse (110121122201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102221121011 is a prime.

It is not a weakly prime, because it can be changed into another prime (102221121061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110560505 + 51110560506.

It is an arithmetic number, because the mean of its divisors is an integer number (51110560506).

Almost surely, 2^102221121011 is an apocalyptic number.

102221121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221121011 is an equidigital number, since it uses as much as digits as its factorization.

102221121011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102221121011 its reverse (110121122201), we get a palindrome (212342243212).

The spelling of 102221121011 in words is "one hundred two billion, two hundred twenty-one million, one hundred twenty-one thousand, eleven".