22222227777779 has 2 divisors, whose sum is σ = 22222227777780. Its totient is φ = 22222227777778.

The previous prime is 22222227777767. The next prime is 22222227777803. The reversal of 22222227777779 is 97777772222222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22222227777779 - 2³² = 22217932810483 is a prime.

It is a pancake number, because a pancake can be divided into 22222227777779 parts by 6666667 straight cuts.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (22222227777719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111113888889 + 11111113888890.

It is an arithmetic number, because the mean of its divisors is an integer number (11111113888890).

Almost surely, 2^{22222227777779} is an apocalyptic number.

22222227777779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222227777779 is an equidigital number, since it uses as much as digits as its factorization.

22222227777779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135531648, while the sum is 65.

It can be divided in two parts, 2222222 and 7777779, that added together give a palindrome (10000001).

The spelling of 22222227777779 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-seven million, seven hundred seventy-seven thousand, seven hundred seventy-nine".