112211131421 has 2 divisors, whose sum is σ = 112211131422. Its totient is φ = 112211131420.

The previous prime is 112211131369. The next prime is 112211131423. The reversal of 112211131421 is 124131112211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111816672100 + 394459321 = 334390^2 + 19861^2 .

It is a cyclic number.

It is not a de Polignac number, because 112211131421 - 2³⁴ = 95031262237 is a prime.

Together with 112211131423, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 112211131393 and 112211131402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112211131423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56105565710 + 56105565711.

It is an arithmetic number, because the mean of its divisors is an integer number (56105565711).

Almost surely, 2^112211131421 is an apocalyptic number.

It is an amenable number.

112211131421 is a deficient number, since it is larger than the sum of its proper divisors (1).

112211131421 is an equidigital number, since it uses as much as digits as its factorization.

112211131421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 20.

Adding to 112211131421 its reverse (124131112211), we get a palindrome (236342243632).

The spelling of 112211131421 in words is "one hundred twelve billion, two hundred eleven million, one hundred thirty-one thousand, four hundred twenty-one".