1011022110221 has 2 divisors, whose sum is σ = 1011022110222. Its totient is φ = 1011022110220.

The previous prime is 1011022110193. The next prime is 1011022110239. The reversal of 1011022110221 is 1220112201101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1008395547721 + 2626562500 = 1004189^2 + 51250^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011022110221 - 2¹⁰ = 1011022109197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011022110196 and 1011022110205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011022118221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505511055110 + 505511055111.

It is an arithmetic number, because the mean of its divisors is an integer number (505511055111).

Almost surely, 2^{1011022110221} is an apocalyptic number.

It is an amenable number.

1011022110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011022110221 is an equidigital number, since it uses as much as digits as its factorization.

1011022110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011022110221 its reverse (1220112201101), we get a palindrome (2231134311322).

The spelling of 1011022110221 in words is "one trillion, eleven billion, twenty-two million, one hundred ten thousand, two hundred twenty-one".