112178221 has 2 divisors, whose sum is σ = 112178222. Its totient is φ = 112178220.

The previous prime is 112178197. The next prime is 112178239. The reversal of 112178221 is 122871211.

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., 110880900 + 1297321 = 10530^2 + 1139^2 .

It is a cyclic number.

It is not a de Polignac number, because 112178221 - 2⁷ = 112178093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112178821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56089110 + 56089111.

It is an arithmetic number, because the mean of its divisors is an integer number (56089111).

Almost surely, 2^112178221 is an apocalyptic number.

It is an amenable number.

112178221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112178221 is an equidigital number, since it uses as much as digits as its factorization.

112178221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 25.

The square root of 112178221 is about 10591.4220480538. The cubic root of 112178221 is about 482.2839946983.

The spelling of 112178221 in words is "one hundred twelve million, one hundred seventy-eight thousand, two hundred twenty-one".