1111220029 has 2 divisors, whose sum is σ = 1111220030. Its totient is φ = 1111220028.

The previous prime is 1111220027. The next prime is 1111220039. The reversal of 1111220029 is 9200221111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 691584804 + 419635225 = 26298^2 + 20485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111220029 - 2¹ = 1111220027 is a prime.

Together with 1111220027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1111219988 and 1111220015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111220021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555610014 + 555610015.

It is an arithmetic number, because the mean of its divisors is an integer number (555610015).

Almost surely, 2^1111220029 is an apocalyptic number.

It is an amenable number.

1111220029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111220029 is an equidigital number, since it uses as much as digits as its factorization.

1111220029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1111220029 is about 33334.9670616306. The cubic root of 1111220029 is about 1035.7780108660.

The spelling of 1111220029 in words is "one billion, one hundred eleven million, two hundred twenty thousand, twenty-nine".