22211221229 has 2 divisors, whose sum is σ = 22211221230. Its totient is φ = 22211221228.

The previous prime is 22211221211. The next prime is 22211221283. The reversal of 22211221229 is 92212211222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17509376329 + 4701844900 = 132323^2 + 68570^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211221229 - 2³² = 17916253933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22211221198 and 22211221207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22211521229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105610614 + 11105610615.

It is an arithmetic number, because the mean of its divisors is an integer number (11105610615).

Almost surely, 2^22211221229 is an apocalyptic number.

It is an amenable number.

22211221229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211221229 is an equidigital number, since it uses as much as digits as its factorization.

22211221229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The spelling of 22211221229 in words is "twenty-two billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twenty-nine".