102020111101 has 2 divisors, whose sum is σ = 102020111102. Its totient is φ = 102020111100.

The previous prime is 102020111099. The next prime is 102020111107. The reversal of 102020111101 is 101111020201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101204151876 + 815959225 = 318126^2 + 28565^2 .

It is a cyclic number.

It is not a de Polignac number, because 102020111101 - 2¹ = 102020111099 is a prime.

Together with 102020111099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102020111107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010055550 + 51010055551.

It is an arithmetic number, because the mean of its divisors is an integer number (51010055551).

Almost surely, 2^102020111101 is an apocalyptic number.

It is an amenable number.

102020111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020111101 is an equidigital number, since it uses as much as digits as its factorization.

102020111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 102020111101 its reverse (101111020201), we get a palindrome (203131131302).

The spelling of 102020111101 in words is "one hundred two billion, twenty million, one hundred eleven thousand, one hundred one".