220001223077 has 2 divisors, whose sum is σ = 220001223078. Its totient is φ = 220001223076.

The previous prime is 220001223073. The next prime is 220001223107. The reversal of 220001223077 is 770322100022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193886986276 + 26114236801 = 440326^2 + 161599^2 .

It is a cyclic number.

It is not a de Polignac number, because 220001223077 - 2² = 220001223073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220001223073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000611538 + 110000611539.

It is an arithmetic number, because the mean of its divisors is an integer number (110000611539).

Almost surely, 2^220001223077 is an apocalyptic number.

It is an amenable number.

220001223077 is a deficient number, since it is larger than the sum of its proper divisors (1).

220001223077 is an equidigital number, since it uses as much as digits as its factorization.

220001223077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 26.

Adding to 220001223077 its reverse (770322100022), we get a palindrome (990323323099).

The spelling of 220001223077 in words is "two hundred twenty billion, one million, two hundred twenty-three thousand, seventy-seven".