10031221337 has 2 divisors, whose sum is σ = 10031221338. Its totient is φ = 10031221336.

The previous prime is 10031221313. The next prime is 10031221339. The reversal of 10031221337 is 73312213001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10024815376 + 6405961 = 100124^2 + 2531^2 .

It is a cyclic number.

It is not a de Polignac number, because 10031221337 - 2²² = 10027027033 is a prime.

Together with 10031221339, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10031221339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015610668 + 5015610669.

It is an arithmetic number, because the mean of its divisors is an integer number (5015610669).

Almost surely, 2^10031221337 is an apocalyptic number.

It is an amenable number.

10031221337 is a deficient number, since it is larger than the sum of its proper divisors (1).

10031221337 is an equidigital number, since it uses as much as digits as its factorization.

10031221337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 10031221337 its reverse (73312213001), we get a palindrome (83343434338).

The spelling of 10031221337 in words is "ten billion, thirty-one million, two hundred twenty-one thousand, three hundred thirty-seven".