220212220997 has 2 divisors, whose sum is σ = 220212220998. Its totient is φ = 220212220996.

The previous prime is 220212220979. The next prime is 220212221011. The reversal of 220212220997 is 799022212022.

It is a happy number.

220212220997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (220212220979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143951189281 + 76261031716 = 379409^2 + 276154^2 .

It is a cyclic number.

It is not a de Polignac number, because 220212220997 - 2⁶ = 220212220933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220212220997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220212220937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110106110498 + 110106110499.

It is an arithmetic number, because the mean of its divisors is an integer number (110106110499).

Almost surely, 2^220212220997 is an apocalyptic number.

It is an amenable number.

220212220997 is a deficient number, since it is larger than the sum of its proper divisors (1).

220212220997 is an equidigital number, since it uses as much as digits as its factorization.

220212220997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 220212220997 in words is "two hundred twenty billion, two hundred twelve million, two hundred twenty thousand, nine hundred ninety-seven".