201021102103 has 2 divisors, whose sum is σ = 201021102104. Its totient is φ = 201021102102.

The previous prime is 201021102101. The next prime is 201021102187. The reversal of 201021102103 is 301201120102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201021102103 - 2¹ = 201021102101 is a prime.

Together with 201021102101, 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 (201021102101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510551051 + 100510551052.

It is an arithmetic number, because the mean of its divisors is an integer number (100510551052).

Almost surely, 2^201021102103 is an apocalyptic number.

201021102103 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021102103 is an equidigital number, since it uses as much as digits as its factorization.

201021102103 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 201021102103 its reverse (301201120102), we get a palindrome (502222222205).

The spelling of 201021102103 in words is "two hundred one billion, twenty-one million, one hundred two thousand, one hundred three".