20002221000037 has 2 divisors, whose sum is σ = 20002221000038. Its totient is φ = 20002221000036.

The previous prime is 20002221000001. The next prime is 20002221000071. The reversal of 20002221000037 is 73000012220002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14202052010721 + 5800168989316 = 3768561^2 + 2408354^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002221000037 - 2¹⁵ = 20002220967269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002220999978 and 20002221000023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002221700037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001110500018 + 10001110500019.

It is an arithmetic number, because the mean of its divisors is an integer number (10001110500019).

Almost surely, 2^{20002221000037} is an apocalyptic number.

It is an amenable number.

20002221000037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002221000037 is an equidigital number, since it uses as much as digits as its factorization.

20002221000037 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 19.

Adding to 20002221000037 its reverse (73000012220002), we get a palindrome (93002233220039).

The spelling of 20002221000037 in words is "twenty trillion, two billion, two hundred twenty-one million, thirty-seven", and thus it is an aban number.