1010021022221 has 2 divisors, whose sum is σ = 1010021022222. Its totient is φ = 1010021022220.

The previous prime is 1010021022181. The next prime is 1010021022233. The reversal of 1010021022221 is 1222201200101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 745953506596 + 264067515625 = 863686^2 + 513875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010021022221 - 2³⁴ = 992841153037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1010021022196 and 1010021022205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010021022251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505010511110 + 505010511111.

It is an arithmetic number, because the mean of its divisors is an integer number (505010511111).

Almost surely, 2^{1010021022221} is an apocalyptic number.

It is an amenable number.

1010021022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010021022221 is an equidigital number, since it uses as much as digits as its factorization.

1010021022221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1010021022221 its reverse (1222201200101), we get a palindrome (2232222222322).

The spelling of 1010021022221 in words is "one trillion, ten billion, twenty-one million, twenty-two thousand, two hundred twenty-one".