11122101121 has 2 divisors, whose sum is σ = 11122101122. Its totient is φ = 11122101120.

The previous prime is 11122101101. The next prime is 11122101187. The reversal of 11122101121 is 12110122111.

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., 10575242896 + 546858225 = 102836^2 + 23385^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122101121 - 2³³ = 2532166529 is a prime.

It is a super-2 number, since 2×11122101121² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11122101101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561050560 + 5561050561.

It is an arithmetic number, because the mean of its divisors is an integer number (5561050561).

Almost surely, 2^11122101121 is an apocalyptic number.

It is an amenable number.

11122101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122101121 is an equidigital number, since it uses as much as digits as its factorization.

11122101121 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 11122101121 its reverse (12110122111), we get a palindrome (23232223232).

The spelling of 11122101121 in words is "eleven billion, one hundred twenty-two million, one hundred one thousand, one hundred twenty-one".