111222220229 has 2 divisors, whose sum is σ = 111222220230. Its totient is φ = 111222220228.

The previous prime is 111222220189. The next prime is 111222220339. The reversal of 111222220229 is 922022222111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110937623329 + 284596900 = 333073^2 + 16870^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222220229 - 2⁸ = 111222219973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111222220198 and 111222220207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111222222229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611110114 + 55611110115.

It is an arithmetic number, because the mean of its divisors is an integer number (55611110115).

Almost surely, 2^111222220229 is an apocalyptic number.

It is an amenable number.

111222220229 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222220229 is an equidigital number, since it uses as much as digits as its factorization.

111222220229 is an evil number, because the sum of its binary digits is even.

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

The spelling of 111222220229 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty-nine".