220654250550197 has 2 divisors, whose sum is σ = 220654250550198. Its totient is φ = 220654250550196.

The previous prime is 220654250550143. The next prime is 220654250550247. The reversal of 220654250550197 is 791055052456022.

220654250550197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149260977652081 + 71393272898116 = 12217241^2 + 8449454^2 .

It is a cyclic number.

It is not a de Polignac number, because 220654250550197 - 2³⁰ = 220653176808373 is a prime.

It is a super-2 number, since 2×220654250550197² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220654250550127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110327125275098 + 110327125275099.

It is an arithmetic number, because the mean of its divisors is an integer number (110327125275099).

Almost surely, 2^{220654250550197} is an apocalyptic number.

It is an amenable number.

220654250550197 is a deficient number, since it is larger than the sum of its proper divisors (1).

220654250550197 is an equidigital number, since it uses as much as digits as its factorization.

220654250550197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560000, while the sum is 53.

The spelling of 220654250550197 in words is "two hundred twenty trillion, six hundred fifty-four billion, two hundred fifty million, five hundred fifty thousand, one hundred ninety-seven".