2201023021 has 2 divisors, whose sum is σ = 2201023022. Its totient is φ = 2201023020.

The previous prime is 2201023009. The next prime is 2201023043. The reversal of 2201023021 is 1203201022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2025990121 + 175032900 = 45011^2 + 13230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201023021 - 2²⁹ = 1664152109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201022992 and 2201023010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201023001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100511510 + 1100511511.

It is an arithmetic number, because the mean of its divisors is an integer number (1100511511).

Almost surely, 2^2201023021 is an apocalyptic number.

It is an amenable number.

2201023021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201023021 is an equidigital number, since it uses as much as digits as its factorization.

2201023021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2201023021 is about 46915.0617712478. The cubic root of 2201023021 is about 1300.7930114240.

Adding to 2201023021 its reverse (1203201022), we get a palindrome (3404224043).

The spelling of 2201023021 in words is "two billion, two hundred one million, twenty-three thousand, twenty-one".