102101020213 has 2 divisors, whose sum is σ = 102101020214. Its totient is φ = 102101020212.

The previous prime is 102101020211. The next prime is 102101020243. The reversal of 102101020213 is 312020101201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80861747044 + 21239273169 = 284362^2 + 145737^2 .

It is a cyclic number.

It is not a de Polignac number, because 102101020213 - 2¹ = 102101020211 is a prime.

Together with 102101020211, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 102101020193 and 102101020202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102101020211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050510106 + 51050510107.

It is an arithmetic number, because the mean of its divisors is an integer number (51050510107).

Almost surely, 2^102101020213 is an apocalyptic number.

It is an amenable number.

102101020213 is a deficient number, since it is larger than the sum of its proper divisors (1).

102101020213 is an equidigital number, since it uses as much as digits as its factorization.

102101020213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 102101020213 its reverse (312020101201), we get a palindrome (414121121414).

The spelling of 102101020213 in words is "one hundred two billion, one hundred one million, twenty thousand, two hundred thirteen".