10212012110021 has 2 divisors, whose sum is σ = 10212012110022. Its totient is φ = 10212012110020.

The previous prime is 10212012109993. The next prime is 10212012110143. The reversal of 10212012110021 is 12001121021201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7353376547521 + 2858635562500 = 2711711^2 + 1690750^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212012110021 - 2²² = 10212007915717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212012109978 and 10212012110005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212012110621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106006055010 + 5106006055011.

It is an arithmetic number, because the mean of its divisors is an integer number (5106006055011).

Almost surely, 2^{10212012110021} is an apocalyptic number.

It is an amenable number.

10212012110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212012110021 is an equidigital number, since it uses as much as digits as its factorization.

10212012110021 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 10212012110021 its reverse (12001121021201), we get a palindrome (22213133131222).

The spelling of 10212012110021 in words is "ten trillion, two hundred twelve billion, twelve million, one hundred ten thousand, twenty-one".