220221100037 has 2 divisors, whose sum is σ = 220221100038. Its totient is φ = 220221100036.

The previous prime is 220221100013. The next prime is 220221100039. The reversal of 220221100037 is 730001122022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204275976961 + 15945123076 = 451969^2 + 126274^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221100037 - 2¹⁴ = 220221083653 is a prime.

It is a super-2 number, since 2×220221100037² (a number of 23 digits) contains 22 as substring.

Together with 220221100039, 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 = 220221099991 and 220221100018.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220221100039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110550018 + 110110550019.

It is an arithmetic number, because the mean of its divisors is an integer number (110110550019).

Almost surely, 2^220221100037 is an apocalyptic number.

It is an amenable number.

220221100037 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221100037 is an equidigital number, since it uses as much as digits as its factorization.

220221100037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 220221100037 its reverse (730001122022), we get a palindrome (950222222059).

The spelling of 220221100037 in words is "two hundred twenty billion, two hundred twenty-one million, one hundred thousand, thirty-seven".