1021012100201 has 2 divisors, whose sum is σ = 1021012100202. Its totient is φ = 1021012100200.

The previous prime is 1021012100159. The next prime is 1021012100203. The reversal of 1021012100201 is 1020012101201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964677552400 + 56334547801 = 982180^2 + 237349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021012100201 - 2²⁶ = 1020944991337 is a prime.

Together with 1021012100203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1021012100203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510506050100 + 510506050101.

It is an arithmetic number, because the mean of its divisors is an integer number (510506050101).

Almost surely, 2^{1021012100201} is an apocalyptic number.

It is an amenable number.

1021012100201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021012100201 is an equidigital number, since it uses as much as digits as its factorization.

1021012100201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1021012100201 its reverse (1020012101201), we get a palindrome (2041024201402).

The spelling of 1021012100201 in words is "one trillion, twenty-one billion, twelve million, one hundred thousand, two hundred one".