220300001021 has 2 divisors, whose sum is σ = 220300001022. Its totient is φ = 220300001020.

The previous prime is 220300000981. The next prime is 220300001023. The reversal of 220300001021 is 120100003022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183689388100 + 36610612921 = 428590^2 + 191339^2 .

It is a cyclic number.

It is not a de Polignac number, because 220300001021 - 2¹⁸ = 220299738877 is a prime.

Together with 220300001023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 220300000993 and 220300001011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220300001023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110150000510 + 110150000511.

It is an arithmetic number, because the mean of its divisors is an integer number (110150000511).

Almost surely, 2^220300001021 is an apocalyptic number.

It is an amenable number.

220300001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220300001021 is an equidigital number, since it uses as much as digits as its factorization.

220300001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 220300001021 its reverse (120100003022), we get a palindrome (340400004043).

The spelling of 220300001021 in words is "two hundred twenty billion, three hundred million, one thousand, twenty-one".