2221212179 has 2 divisors, whose sum is σ = 2221212180. Its totient is φ = 2221212178.

The previous prime is 2221212131. The next prime is 2221212211. The reversal of 2221212179 is 9712121222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221212179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221212079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110606089 + 1110606090.

It is an arithmetic number, because the mean of its divisors is an integer number (1110606090).

Almost surely, 2^2221212179 is an apocalyptic number.

2221212179 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221212179 is an equidigital number, since it uses as much as digits as its factorization.

2221212179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 2221212179 is about 47129.7377353195. The cubic root of 2221212179 is about 1304.7581411515.

The spelling of 2221212179 in words is "two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred seventy-nine".