1030111302221 has 2 divisors, whose sum is σ = 1030111302222. Its totient is φ = 1030111302220.

The previous prime is 1030111302197. The next prime is 1030111302239. The reversal of 1030111302221 is 1222031110301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 758789077225 + 271322224996 = 871085^2 + 520886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1030111302221 is a prime.

It is a super-2 number, since 2×1030111302221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1030111302221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1030111392221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515055651110 + 515055651111.

It is an arithmetic number, because the mean of its divisors is an integer number (515055651111).

Almost surely, 2^{1030111302221} is an apocalyptic number.

It is an amenable number.

1030111302221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030111302221 is an equidigital number, since it uses as much as digits as its factorization.

1030111302221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1030111302221 its reverse (1222031110301), we get a palindrome (2252142412522).

The spelling of 1030111302221 in words is "one trillion, thirty billion, one hundred eleven million, three hundred two thousand, two hundred twenty-one".