1021000000201 has 2 divisors, whose sum is σ = 1021000000202. Its totient is φ = 1021000000200.

The previous prime is 1021000000177. The next prime is 1021000000213. The reversal of 1021000000201 is 1020000001201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1010869376400 + 10130623801 = 1005420^2 + 100651^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021000000201 - 2⁵ = 1021000000169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021000000291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510500000100 + 510500000101.

It is an arithmetic number, because the mean of its divisors is an integer number (510500000101).

Almost surely, 2^{1021000000201} is an apocalyptic number.

It is an amenable number.

1021000000201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021000000201 is an equidigital number, since it uses as much as digits as its factorization.

1021000000201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1021000000201 its reverse (1020000001201), we get a palindrome (2041000001402).

The spelling of 1021000000201 in words is "one trillion, twenty-one billion, two hundred one", and thus it is an aban number.