10000220221997 has 2 divisors, whose sum is σ = 10000220221998. Its totient is φ = 10000220221996.

The previous prime is 10000220221951. The next prime is 10000220222009. The reversal of 10000220221997 is 79912202200001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6712420815556 + 3287799406441 = 2590834^2 + 1813229^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000220221997 - 2¹⁸ = 10000219959853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10000220227997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000110110998 + 5000110110999.

It is an arithmetic number, because the mean of its divisors is an integer number (5000110110999).

Almost surely, 2^{10000220221997} is an apocalyptic number.

It is an amenable number.

10000220221997 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000220221997 is an equidigital number, since it uses as much as digits as its factorization.

10000220221997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

Adding to 10000220221997 its reverse (79912202200001), we get a palindrome (89912422421998).

The spelling of 10000220221997 in words is "ten trillion, two hundred twenty million, two hundred twenty-one thousand, nine hundred ninety-seven".