1020110221201 has 2 divisors, whose sum is σ = 1020110221202. Its totient is φ = 1020110221200.

The previous prime is 1020110221159. The next prime is 1020110221211. The reversal of 1020110221201 is 1021220110201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1013493212176 + 6617009025 = 1006724^2 + 81345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020110221201 - 2³⁵ = 985750482833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020110221211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510055110600 + 510055110601.

It is an arithmetic number, because the mean of its divisors is an integer number (510055110601).

Almost surely, 2^{1020110221201} is an apocalyptic number.

It is an amenable number.

1020110221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020110221201 is an equidigital number, since it uses as much as digits as its factorization.

1020110221201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020110221201 its reverse (1021220110201), we get a palindrome (2041330331402).

The spelling of 1020110221201 in words is "one trillion, twenty billion, one hundred ten million, two hundred twenty-one thousand, two hundred one".