2212222221949 has 2 divisors, whose sum is σ = 2212222221950. Its totient is φ = 2212222221948.

The previous prime is 2212222221917. The next prime is 2212222222019. The reversal of 2212222221949 is 9491222222122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1566277280100 + 645944941849 = 1251510^2 + 803707^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212222221949 - 2⁵ = 2212222221917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212222227949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106111110974 + 1106111110975.

It is an arithmetic number, because the mean of its divisors is an integer number (1106111110975).

Almost surely, 2^{2212222221949} is an apocalyptic number.

It is an amenable number.

2212222221949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212222221949 is an equidigital number, since it uses as much as digits as its factorization.

2212222221949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The spelling of 2212222221949 in words is "two trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, nine hundred forty-nine".