201030112021 has 2 divisors, whose sum is σ = 201030112022. Its totient is φ = 201030112020.

The previous prime is 201030111977. The next prime is 201030112033. The reversal of 201030112021 is 120211030102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174878694225 + 26151417796 = 418185^2 + 161714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201030112021 is a prime.

It is a super-3 number, since 3×201030112021³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201030111992 and 201030112010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201030112051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100515056010 + 100515056011.

It is an arithmetic number, because the mean of its divisors is an integer number (100515056011).

Almost surely, 2^201030112021 is an apocalyptic number.

It is an amenable number.

201030112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201030112021 is an equidigital number, since it uses as much as digits as its factorization.

201030112021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 201030112021 its reverse (120211030102), we get a palindrome (321241142123).

The spelling of 201030112021 in words is "two hundred one billion, thirty million, one hundred twelve thousand, twenty-one".