1220022029 has 2 divisors, whose sum is σ = 1220022030. Its totient is φ = 1220022028.

The previous prime is 1220021989. The next prime is 1220022031. The reversal of 1220022029 is 9202200221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1064521129 + 155500900 = 32627^2 + 12470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220022029 is a prime.

It is a Sophie Germain prime.

Together with 1220022031, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220022029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220022829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610011014 + 610011015.

It is an arithmetic number, because the mean of its divisors is an integer number (610011015).

Almost surely, 2^1220022029 is an apocalyptic number.

It is an amenable number.

1220022029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220022029 is an equidigital number, since it uses as much as digits as its factorization.

1220022029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1220022029 is about 34928.8137359401. The cubic root of 1220022029 is about 1068.5361614330.

The spelling of 1220022029 in words is "one billion, two hundred twenty million, twenty-two thousand, twenty-nine".