2302021021 has 2 divisors, whose sum is σ = 2302021022. Its totient is φ = 2302021020.

The previous prime is 2302021013. The next prime is 2302021049. The reversal of 2302021021 is 1201202032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1591212100 + 710808921 = 39890^2 + 26661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2302021021 - 2³ = 2302021013 is a prime.

It is a super-2 number, since 2×2302021021² = 10598601562251764882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2302020992 and 2302021010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2302021061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151010510 + 1151010511.

It is an arithmetic number, because the mean of its divisors is an integer number (1151010511).

Almost surely, 2^2302021021 is an apocalyptic number.

It is an amenable number.

2302021021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2302021021 is an equidigital number, since it uses as much as digits as its factorization.

2302021021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2302021021 is about 47979.3812069310. The cubic root of 2302021021 is about 1320.3926405035.

Adding to 2302021021 its reverse (1201202032), we get a palindrome (3503223053).

The spelling of 2302021021 in words is "two billion, three hundred two million, twenty-one thousand, twenty-one".