10022120111021 has 2 divisors, whose sum is σ = 10022120111022. Its totient is φ = 10022120111020.

The previous prime is 10022120110991. The next prime is 10022120111071. The reversal of 10022120111021 is 12011102122001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5585725735396 + 4436394375625 = 2363414^2 + 2106275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10022120111021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10022120110987 and 10022120111005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10022120111071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5011060055510 + 5011060055511.

It is an arithmetic number, because the mean of its divisors is an integer number (5011060055511).

Almost surely, 2^{10022120111021} is an apocalyptic number.

It is an amenable number.

10022120111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10022120111021 is an equidigital number, since it uses as much as digits as its factorization.

10022120111021 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 14.

Adding to 10022120111021 its reverse (12011102122001), we get a palindrome (22033222233022).

The spelling of 10022120111021 in words is "ten trillion, twenty-two billion, one hundred twenty million, one hundred eleven thousand, twenty-one".