11112021101 has 2 divisors, whose sum is σ = 11112021102. Its totient is φ = 11112021100.

The previous prime is 11112021059. The next prime is 11112021103. The reversal of 11112021101 is 10112021111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8454618601 + 2657402500 = 91949^2 + 51550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112021101 is a prime.

Together with 11112021103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112021103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556010550 + 5556010551.

It is an arithmetic number, because the mean of its divisors is an integer number (5556010551).

Almost surely, 2^11112021101 is an apocalyptic number.

It is an amenable number.

11112021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112021101 is an equidigital number, since it uses as much as digits as its factorization.

11112021101 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 11.

Adding to 11112021101 its reverse (10112021111), we get a palindrome (21224042212).

The spelling of 11112021101 in words is "eleven billion, one hundred twelve million, twenty-one thousand, one hundred one".