201023033021 has 2 divisors, whose sum is σ = 201023033022. Its totient is φ = 201023033020.

The previous prime is 201023032993. The next prime is 201023033047. The reversal of 201023033021 is 120330320102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197358062500 + 3664970521 = 444250^2 + 60539^2 .

It is a cyclic number.

It is not a de Polignac number, because 201023033021 - 2¹⁰ = 201023031997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201023033621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100511516510 + 100511516511.

It is an arithmetic number, because the mean of its divisors is an integer number (100511516511).

Almost surely, 2^201023033021 is an apocalyptic number.

It is an amenable number.

201023033021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201023033021 is an equidigital number, since it uses as much as digits as its factorization.

201023033021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 201023033021 its reverse (120330320102), we get a palindrome (321353353123).

The spelling of 201023033021 in words is "two hundred one billion, twenty-three million, thirty-three thousand, twenty-one".