221322030037 has 2 divisors, whose sum is σ = 221322030038. Its totient is φ = 221322030036.

The previous prime is 221322029977. The next prime is 221322030079. The reversal of 221322030037 is 730030223122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125763146161 + 95558883876 = 354631^2 + 309126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221322030037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221322029993 and 221322030020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221322730037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110661015018 + 110661015019.

It is an arithmetic number, because the mean of its divisors is an integer number (110661015019).

Almost surely, 2^221322030037 is an apocalyptic number.

It is an amenable number.

221322030037 is a deficient number, since it is larger than the sum of its proper divisors (1).

221322030037 is an equidigital number, since it uses as much as digits as its factorization.

221322030037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

Adding to 221322030037 its reverse (730030223122), we get a palindrome (951352253159).

The spelling of 221322030037 in words is "two hundred twenty-one billion, three hundred twenty-two million, thirty thousand, thirty-seven".