221313130001 has 2 divisors, whose sum is σ = 221313130002. Its totient is φ = 221313130000.

The previous prime is 221313129997. The next prime is 221313130019. The reversal of 221313130001 is 100031313122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160942182976 + 60370947025 = 401176^2 + 245705^2 .

It is a cyclic number.

It is not a de Polignac number, because 221313130001 - 2² = 221313129997 is a prime.

It is not a weakly prime, because it can be changed into another prime (221313130091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110656565000 + 110656565001.

It is an arithmetic number, because the mean of its divisors is an integer number (110656565001).

Almost surely, 2^221313130001 is an apocalyptic number.

It is an amenable number.

221313130001 is a deficient number, since it is larger than the sum of its proper divisors (1).

221313130001 is an equidigital number, since it uses as much as digits as its factorization.

221313130001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 221313130001 its reverse (100031313122), we get a palindrome (321344443123).

The spelling of 221313130001 in words is "two hundred twenty-one billion, three hundred thirteen million, one hundred thirty thousand, one".