221362722029 has 2 divisors, whose sum is σ = 221362722030. Its totient is φ = 221362722028.

The previous prime is 221362722011. The next prime is 221362722121. The reversal of 221362722029 is 920227263122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212980404004 + 8382318025 = 461498^2 + 91555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221362722029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221362721983 and 221362722001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221362725029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110681361014 + 110681361015.

It is an arithmetic number, because the mean of its divisors is an integer number (110681361015).

Almost surely, 2^221362722029 is an apocalyptic number.

It is an amenable number.

221362722029 is a deficient number, since it is larger than the sum of its proper divisors (1).

221362722029 is an equidigital number, since it uses as much as digits as its factorization.

221362722029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 221362722029 in words is "two hundred twenty-one billion, three hundred sixty-two million, seven hundred twenty-two thousand, twenty-nine".