111220607 has 2 divisors, whose sum is σ = 111220608. Its totient is φ = 111220606.

The previous prime is 111220583. The next prime is 111220609. The reversal of 111220607 is 706022111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111220607 - 2¹⁶ = 111155071 is a prime.

Together with 111220609, 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 (111220609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610303 + 55610304.

It is an arithmetic number, because the mean of its divisors is an integer number (55610304).

Almost surely, 2^111220607 is an apocalyptic number.

111220607 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220607 is an equidigital number, since it uses as much as digits as its factorization.

111220607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 111220607 is about 10546.1181009886. The cubic root of 111220607 is about 480.9077253213.

Adding to 111220607 its reverse (706022111), we get a palindrome (817242718).

The spelling of 111220607 in words is "one hundred eleven million, two hundred twenty thousand, six hundred seven".