201011220001021 has 2 divisors, whose sum is σ = 201011220001022. Its totient is φ = 201011220001020.

The previous prime is 201011220001003. The next prime is 201011220001051. The reversal of 201011220001021 is 120100022110102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136261613803225 + 64749606197796 = 11673115^2 + 8046714^2 .

It is a cyclic number.

It is not a de Polignac number, because 201011220001021 - 2⁹ = 201011220000509 is a prime.

It is a super-2 number, since 2×201011220001021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201011220000992 and 201011220001010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201011220001051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505610000510 + 100505610000511.

It is an arithmetic number, because the mean of its divisors is an integer number (100505610000511).

Almost surely, 2^{201011220001021} is an apocalyptic number.

It is an amenable number.

201011220001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201011220001021 is an equidigital number, since it uses as much as digits as its factorization.

201011220001021 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 201011220001021 its reverse (120100022110102), we get a palindrome (321111242111123).

The spelling of 201011220001021 in words is "two hundred one trillion, eleven billion, two hundred twenty million, one thousand, twenty-one".