172218701041 has 2 divisors, whose sum is σ = 172218701042. Its totient is φ = 172218701040.

The previous prime is 172218701029. The next prime is 172218701077. The reversal of 172218701041 is 140107812271.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110849043600 + 61369657441 = 332940^2 + 247729^2 .

It is a cyclic number.

It is not a de Polignac number, because 172218701041 - 2²⁹ = 171681830129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172218700988 and 172218701006.

It is not a weakly prime, because it can be changed into another prime (172218701441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86109350520 + 86109350521.

It is an arithmetic number, because the mean of its divisors is an integer number (86109350521).

Almost surely, 2^172218701041 is an apocalyptic number.

It is an amenable number.

172218701041 is a deficient number, since it is larger than the sum of its proper divisors (1).

172218701041 is an equidigital number, since it uses as much as digits as its factorization.

172218701041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 34.

The spelling of 172218701041 in words is "one hundred seventy-two billion, two hundred eighteen million, seven hundred one thousand, forty-one".