37120221001 has 2 divisors, whose sum is σ = 37120221002. Its totient is φ = 37120221000.

The previous prime is 37120220999. The next prime is 37120221023. The reversal of 37120221001 is 10012202173.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36749273401 + 370947600 = 191701^2 + 19260^2 .

It is a cyclic number.

It is not a de Polignac number, because 37120221001 - 2¹ = 37120220999 is a prime.

Together with 37120220999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 37120221001.

It is not a weakly prime, because it can be changed into another prime (37120221031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18560110500 + 18560110501.

It is an arithmetic number, because the mean of its divisors is an integer number (18560110501).

Almost surely, 2^37120221001 is an apocalyptic number.

It is an amenable number.

37120221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

37120221001 is an equidigital number, since it uses as much as digits as its factorization.

37120221001 is an evil number, because the sum of its binary digits is even.

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

Adding to 37120221001 its reverse (10012202173), we get a palindrome (47132423174).

It can be divided in two parts, 37120 and 221001, that added together give a triangular number (258121 = T₇₁₈).

The spelling of 37120221001 in words is "thirty-seven billion, one hundred twenty million, two hundred twenty-one thousand, one".