1002110202221 has 2 divisors, whose sum is σ = 1002110202222. Its totient is φ = 1002110202220.

The previous prime is 1002110202211. The next prime is 1002110202257. The reversal of 1002110202221 is 1222020112001.

1002110202221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1001820828100 + 289374121 = 1000910^2 + 17011^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002110202221 - 2⁶ = 1002110202157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002110202196 and 1002110202205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002110202211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501055101110 + 501055101111.

It is an arithmetic number, because the mean of its divisors is an integer number (501055101111).

Almost surely, 2^{1002110202221} is an apocalyptic number.

It is an amenable number.

1002110202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002110202221 is an equidigital number, since it uses as much as digits as its factorization.

1002110202221 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 1002110202221 its reverse (1222020112001), we get a palindrome (2224130314222).

The spelling of 1002110202221 in words is "one trillion, two billion, one hundred ten million, two hundred two thousand, two hundred twenty-one".