111220221127 has 2 divisors, whose sum is σ = 111220221128. Its totient is φ = 111220221126.

The previous prime is 111220221121. The next prime is 111220221143. The reversal of 111220221127 is 721122022111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111220221127 - 2²³ = 111211832519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111220221098 and 111220221107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111220221121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610110563 + 55610110564.

It is an arithmetic number, because the mean of its divisors is an integer number (55610110564).

Almost surely, 2^111220221127 is an apocalyptic number.

111220221127 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220221127 is an equidigital number, since it uses as much as digits as its factorization.

111220221127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 111220221127 its reverse (721122022111), we get a palindrome (832342243238).

The spelling of 111220221127 in words is "one hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twenty-seven".