2178222083 has 2 divisors, whose sum is σ = 2178222084. Its totient is φ = 2178222082.

The previous prime is 2178222043. The next prime is 2178222127. The reversal of 2178222083 is 3802228712.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2178222083 - 2²⁰ = 2177173507 is a prime.

It is not a weakly prime, because it can be changed into another prime (2178222023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089111041 + 1089111042.

It is an arithmetic number, because the mean of its divisors is an integer number (1089111042).

Almost surely, 2^2178222083 is an apocalyptic number.

2178222083 is a deficient number, since it is larger than the sum of its proper divisors (1).

2178222083 is an equidigital number, since it uses as much as digits as its factorization.

2178222083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2178222083 is about 46671.4268369845. The cubic root of 2178222083 is about 1296.2856664252.

The spelling of 2178222083 in words is "two billion, one hundred seventy-eight million, two hundred twenty-two thousand, eighty-three".