1220211111073 has 2 divisors, whose sum is σ = 1220211111074. Its totient is φ = 1220211111072.

The previous prime is 1220211111071. The next prime is 1220211111083. The reversal of 1220211111073 is 3701111120221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669562519824 + 550648591249 = 818268^2 + 742057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220211111073 - 2¹ = 1220211111071 is a prime.

It is a super-2 number, since 2×1220211111073² (a number of 25 digits) contains 22 as substring.

Together with 1220211111071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1220211111071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610105555536 + 610105555537.

It is an arithmetic number, because the mean of its divisors is an integer number (610105555537).

Almost surely, 2^{1220211111073} is an apocalyptic number.

It is an amenable number.

1220211111073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220211111073 is an equidigital number, since it uses as much as digits as its factorization.

1220211111073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 1220211111073 its reverse (3701111120221), we get a palindrome (4921322231294).

The spelling of 1220211111073 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred eleven thousand, seventy-three".