21001010022037 has 2 divisors, whose sum is σ = 21001010022038. Its totient is φ = 21001010022036.

The previous prime is 21001010021969. The next prime is 21001010022073. The reversal of 21001010022037 is 73022001010012.

Together with next prime (21001010022073) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18157365233316 + 2843644788721 = 4261146^2 + 1686311^2 .

It is a cyclic number.

It is not a de Polignac number, because 21001010022037 - 2¹⁵ = 21001009989269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21001010029037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500505011018 + 10500505011019.

It is an arithmetic number, because the mean of its divisors is an integer number (10500505011019).

Almost surely, 2^{21001010022037} is an apocalyptic number.

It is an amenable number.

21001010022037 is a deficient number, since it is larger than the sum of its proper divisors (1).

21001010022037 is an equidigital number, since it uses as much as digits as its factorization.

21001010022037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 21001010022037 its reverse (73022001010012), we get a palindrome (94023011032049).

The spelling of 21001010022037 in words is "twenty-one trillion, one billion, ten million, twenty-two thousand, thirty-seven".