222221020202009 has 2 divisors, whose sum is σ = 222221020202010. Its totient is φ = 222221020202008.

The previous prime is 222221020201979. The next prime is 222221020202033. The reversal of 222221020202009 is 900202020122222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185425003897225 + 36796016304784 = 13617085^2 + 6065972^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221020202009 - 2⁸ = 222221020201753 is a prime.

It is not a weakly prime, because it can be changed into another prime (222221020202309) 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, 111110510101004 + 111110510101005.

It is an arithmetic number, because the mean of its divisors is an integer number (111110510101005).

Almost surely, 2^{222221020202009} is an apocalyptic number.

It is an amenable number.

222221020202009 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221020202009 is an equidigital number, since it uses as much as digits as its factorization.

222221020202009 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 spelling of 222221020202009 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, twenty million, two hundred two thousand, nine".