37221037221 has 32 divisors (see below), whose sum is σ = 52843409280. Its totient is φ = 23237280000.

The previous prime is 37221037199. The next prime is 37221037289. The reversal of 37221037221 is 12273012273.

37221037221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 37221037221 - 2²¹ = 37218940069 is a prime.

It is a super-2 number, since 2×37221037221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37221037291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3754371 + ... + 3764271.

It is an arithmetic number, because the mean of its divisors is an integer number (1651356540).

Almost surely, 2^37221037221 is an apocalyptic number.

It is an amenable number.

37221037221 is a deficient number, since it is larger than the sum of its proper divisors (15622372059).

37221037221 is a wasteful number, since it uses less digits than its factorization.

37221037221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10677.

The product of its (nonzero) digits is 7056, while the sum is 30.

Adding to 37221037221 its reverse (12273012273), we get a palindrome (49494049494).

The spelling of 37221037221 in words is "thirty-seven billion, two hundred twenty-one million, thirty-seven thousand, two hundred twenty-one".