37224122521 has 2 divisors, whose sum is σ = 37224122522. Its totient is φ = 37224122520.

The previous prime is 37224122519. The next prime is 37224122531. The reversal of 37224122521 is 12522142273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23537696400 + 13686426121 = 153420^2 + 116989^2 .

It is a cyclic number.

It is not a de Polignac number, because 37224122521 - 2¹ = 37224122519 is a prime.

Together with 37224122519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (37224122531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18612061260 + 18612061261.

It is an arithmetic number, because the mean of its divisors is an integer number (18612061261).

Almost surely, 2^37224122521 is an apocalyptic number.

It is an amenable number.

37224122521 is a deficient number, since it is larger than the sum of its proper divisors (1).

37224122521 is an equidigital number, since it uses as much as digits as its factorization.

37224122521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

Adding to 37224122521 its reverse (12522142273), we get a palindrome (49746264794).

The spelling of 37224122521 in words is "thirty-seven billion, two hundred twenty-four million, one hundred twenty-two thousand, five hundred twenty-one".