100011012211021 has 2 divisors, whose sum is σ = 100011012211022. Its totient is φ = 100011012211020.

The previous prime is 100011012211013. The next prime is 100011012211063. The reversal of 100011012211021 is 120112210110001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89931746065225 + 10079266145796 = 9483235^2 + 3174786^2 .

It is an emirp because it is prime and its reverse (120112210110001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100011012211021 - 2³ = 100011012211013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100011012210992 and 100011012211010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100011012211421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005506105510 + 50005506105511.

It is an arithmetic number, because the mean of its divisors is an integer number (50005506105511).

Almost surely, 2^{100011012211021} is an apocalyptic number.

It is an amenable number.

100011012211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100011012211021 is an equidigital number, since it uses as much as digits as its factorization.

100011012211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100011012211021 its reverse (120112210110001), we get a palindrome (220123222321022).

The spelling of 100011012211021 in words is "one hundred trillion, eleven billion, twelve million, two hundred eleven thousand, twenty-one".