1020210218101 has 2 divisors, whose sum is σ = 1020210218102. Its totient is φ = 1020210218100.

The previous prime is 1020210218099. The next prime is 1020210218117. The reversal of 1020210218101 is 1018120120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996533010225 + 23677207876 = 998265^2 + 153874^2 .

It is an emirp because it is prime and its reverse (1018120120201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020210218101 - 2¹ = 1020210218099 is a prime.

Together with 1020210218099, 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 (1020210218801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510105109050 + 510105109051.

It is an arithmetic number, because the mean of its divisors is an integer number (510105109051).

Almost surely, 2^{1020210218101} is an apocalyptic number.

It is an amenable number.

1020210218101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020210218101 is an equidigital number, since it uses as much as digits as its factorization.

1020210218101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 1020210218101 its reverse (1018120120201), we get a palindrome (2038330338302).

The spelling of 1020210218101 in words is "one trillion, twenty billion, two hundred ten million, two hundred eighteen thousand, one hundred one".