221010037 has 2 divisors, whose sum is σ = 221010038. Its totient is φ = 221010036.

The previous prime is 221010011. The next prime is 221010077. The reversal of 221010037 is 730010122.

It is a happy number.

221010037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210859441 + 10150596 = 14521^2 + 3186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221010037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221010037.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221010077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505018 + 110505019.

It is an arithmetic number, because the mean of its divisors is an integer number (110505019).

Almost surely, 2^221010037 is an apocalyptic number.

It is an amenable number.

221010037 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010037 is an equidigital number, since it uses as much as digits as its factorization.

221010037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 221010037 is about 14866.4063243273. The cubic root of 221010037 is about 604.6035122735.

Adding to 221010037 its reverse (730010122), we get a palindrome (951020159).

The spelling of 221010037 in words is "two hundred twenty-one million, ten thousand, thirty-seven".