11101101211021 has 2 divisors, whose sum is σ = 11101101211022. Its totient is φ = 11101101211020.

The previous prime is 11101101211001. The next prime is 11101101211027. The reversal of 11101101211021 is 12011210110111.

11101101211021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6270446695396 + 4830654515625 = 2504086^2 + 2197875^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101101211021 - 2⁷ = 11101101210893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101101210992 and 11101101211010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11101101211027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550550605510 + 5550550605511.

It is an arithmetic number, because the mean of its divisors is an integer number (5550550605511).

Almost surely, 2^{11101101211021} is an apocalyptic number.

It is an amenable number.

11101101211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101101211021 is an equidigital number, since it uses as much as digits as its factorization.

11101101211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11101101211021 its reverse (12011210110111), we get a palindrome (23112311321132).

The spelling of 11101101211021 in words is "eleven trillion, one hundred one billion, one hundred one million, two hundred eleven thousand, twenty-one".