220221021101201 has 2 divisors, whose sum is σ = 220221021101202. Its totient is φ = 220221021101200.

The previous prime is 220221021101189. The next prime is 220221021101219. The reversal of 220221021101201 is 102101120122022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150759131116801 + 69461889984400 = 12278401^2 + 8334380^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221021101201 - 2³⁴ = 220203841232017 is a prime.

It is a super-2 number, since 2×220221021101201² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220221021101201.

It is not a weakly prime, because it can be changed into another prime (220221021101401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110510550600 + 110110510550601.

It is an arithmetic number, because the mean of its divisors is an integer number (110110510550601).

Almost surely, 2^{220221021101201} is an apocalyptic number.

It is an amenable number.

220221021101201 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221021101201 is an equidigital number, since it uses as much as digits as its factorization.

220221021101201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220221021101201 its reverse (102101120122022), we get a palindrome (322322141223223).

The spelling of 220221021101201 in words is "two hundred twenty trillion, two hundred twenty-one billion, twenty-one million, one hundred one thousand, two hundred one".