11112230021 has 2 divisors, whose sum is σ = 11112230022. Its totient is φ = 11112230020.

The previous prime is 11112229969. The next prime is 11112230029. The reversal of 11112230021 is 12003221111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10125390625 + 986839396 = 100625^2 + 31414^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112230021 - 2¹⁰ = 11112228997 is a prime.

It is a super-2 number, since 2×11112230021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11112229978 and 11112230005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112230029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556115010 + 5556115011.

It is an arithmetic number, because the mean of its divisors is an integer number (5556115011).

Almost surely, 2^11112230021 is an apocalyptic number.

It is an amenable number.

11112230021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112230021 is an equidigital number, since it uses as much as digits as its factorization.

11112230021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11112230021 its reverse (12003221111), we get a palindrome (23115451132).

The spelling of 11112230021 in words is "eleven billion, one hundred twelve million, two hundred thirty thousand, twenty-one".