10211200001021 has 2 divisors, whose sum is σ = 10211200001022. Its totient is φ = 10211200001020.

The previous prime is 10211200001003. The next prime is 10211200001063. The reversal of 10211200001021 is 12010000211201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8130134092921 + 2081065908100 = 2851339^2 + 1442590^2 .

It is an emirp because it is prime and its reverse (12010000211201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10211200001021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10211200000993 and 10211200001011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211200001221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105600000510 + 5105600000511.

It is an arithmetic number, because the mean of its divisors is an integer number (5105600000511).

Almost surely, 2^{10211200001021} is an apocalyptic number.

It is an amenable number.

10211200001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211200001021 is an equidigital number, since it uses as much as digits as its factorization.

10211200001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10211200001021 its reverse (12010000211201), we get a palindrome (22221200212222).

The spelling of 10211200001021 in words is "ten trillion, two hundred eleven billion, two hundred million, one thousand, twenty-one".