1220244029 has 2 divisors, whose sum is σ = 1220244030. Its totient is φ = 1220244028.

The previous prime is 1220244013. The next prime is 1220244031. The reversal of 1220244029 is 9204420221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1220104900 + 139129 = 34930^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220244029 - 2⁴ = 1220244013 is a prime.

Together with 1220244031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220243989 and 1220244007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220244059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610122014 + 610122015.

It is an arithmetic number, because the mean of its divisors is an integer number (610122015).

Almost surely, 2^1220244029 is an apocalyptic number.

It is an amenable number.

1220244029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220244029 is an equidigital number, since it uses as much as digits as its factorization.

1220244029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1220244029 is about 34931.9914834525. The cubic root of 1220244029 is about 1068.6009691811.

The spelling of 1220244029 in words is "one billion, two hundred twenty million, two hundred forty-four thousand, twenty-nine".