22221221201029 has 2 divisors, whose sum is σ = 22221221201030. Its totient is φ = 22221221201028.

The previous prime is 22221221200987. The next prime is 22221221201033. The reversal of 22221221201029 is 92010212212222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19973614564225 + 2247606636804 = 4469185^2 + 1499202^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221221201029 - 2⁹ = 22221221200517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22221221200988 and 22221221201006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221221301029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110610600514 + 11110610600515.

It is an arithmetic number, because the mean of its divisors is an integer number (11110610600515).

Almost surely, 2^{22221221201029} is an apocalyptic number.

It is an amenable number.

22221221201029 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221221201029 is an equidigital number, since it uses as much as digits as its factorization.

22221221201029 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 28.

The spelling of 22221221201029 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, twenty-nine".