210022100011021 has 2 divisors, whose sum is σ = 210022100011022. Its totient is φ = 210022100011020.

The previous prime is 210022100011013. The next prime is 210022100011103. The reversal of 210022100011021 is 120110001220012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158060564861796 + 51961535149225 = 12572214^2 + 7208435^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022100011021 - 2³ = 210022100011013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210022100010992 and 210022100011010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210022100011921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011050005510 + 105011050005511.

It is an arithmetic number, because the mean of its divisors is an integer number (105011050005511).

Almost surely, 2^{210022100011021} is an apocalyptic number.

It is an amenable number.

210022100011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022100011021 is an equidigital number, since it uses as much as digits as its factorization.

210022100011021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210022100011021 its reverse (120110001220012), we get a palindrome (330132101231033).

The spelling of 210022100011021 in words is "two hundred ten trillion, twenty-two billion, one hundred million, eleven thousand, twenty-one".