22220629 has 2 divisors, whose sum is σ = 22220630. Its totient is φ = 22220628.

The previous prime is 22220623. The next prime is 22220651. The reversal of 22220629 is 92602222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19158129 + 3062500 = 4377^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220629 - 2⁹ = 22220117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22220623) 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, 11110314 + 11110315.

It is an arithmetic number, because the mean of its divisors is an integer number (11110315).

Almost surely, 2^22220629 is an apocalyptic number.

It is an amenable number.

22220629 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220629 is an equidigital number, since it uses as much as digits as its factorization.

22220629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 22220629 is about 4713.8762181457. The cubic root of 22220629 is about 281.1375027283.

The spelling of 22220629 in words is "twenty-two million, two hundred twenty thousand, six hundred twenty-nine".