38506700221 has 32 divisors (see below), whose sum is σ = 46442782080. Its totient is φ = 31513036800.

The previous prime is 38506700213. The next prime is 38506700233. The reversal of 38506700221 is 12200760583.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 38506700221 - 2³ = 38506700213 is a prime.

It is a super-2 number, since 2×38506700221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38506740221) 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 in 31 ways as a sum of consecutive naturals, for example, 547081 + ... + 613441.

It is an arithmetic number, because the mean of its divisors is an integer number (1451336940).

Almost surely, 2^38506700221 is an apocalyptic number.

It is an amenable number.

38506700221 is a deficient number, since it is larger than the sum of its proper divisors (7936081859).

38506700221 is a wasteful number, since it uses less digits than its factorization.

38506700221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66525.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 38506700221 in words is "thirty-eight billion, five hundred six million, seven hundred thousand, two hundred twenty-one".