1301003312221 has 2 divisors, whose sum is σ = 1301003312222. Its totient is φ = 1301003312220.

The previous prime is 1301003312173. The next prime is 1301003312261. The reversal of 1301003312221 is 1222133001031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1296512436025 + 4490876196 = 1138645^2 + 67014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301003312221 - 2¹⁹ = 1301002787933 is a prime.

It is a super-3 number, since 3×1301003312221³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301003312261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650501656110 + 650501656111.

It is an arithmetic number, because the mean of its divisors is an integer number (650501656111).

Almost surely, 2^{1301003312221} is an apocalyptic number.

It is an amenable number.

1301003312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301003312221 is an equidigital number, since it uses as much as digits as its factorization.

1301003312221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1301003312221 its reverse (1222133001031), we get a palindrome (2523136313252).

The spelling of 1301003312221 in words is "one trillion, three hundred one billion, three million, three hundred twelve thousand, two hundred twenty-one".