102021211093 has 2 divisors, whose sum is σ = 102021211094. Its totient is φ = 102021211092.

The previous prime is 102021211091. The next prime is 102021211169. The reversal of 102021211093 is 390112120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72801753124 + 29219457969 = 269818^2 + 170937^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021211093 - 2¹ = 102021211091 is a prime.

Together with 102021211091, 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 (102021211091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010605546 + 51010605547.

It is an arithmetic number, because the mean of its divisors is an integer number (51010605547).

Almost surely, 2^102021211093 is an apocalyptic number.

It is an amenable number.

102021211093 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021211093 is an equidigital number, since it uses as much as digits as its factorization.

102021211093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 102021211093 its reverse (390112120201), we get a palindrome (492133331294).

The spelling of 102021211093 in words is "one hundred two billion, twenty-one million, two hundred eleven thousand, ninety-three".