20353222073 has 2 divisors, whose sum is σ = 20353222074. Its totient is φ = 20353222072.

The previous prime is 20353222039. The next prime is 20353222079. The reversal of 20353222073 is 37022235302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14154336784 + 6198885289 = 118972^2 + 78733^2 .

It is a cyclic number.

It is not a de Polignac number, because 20353222073 - 2¹⁴ = 20353205689 is a prime.

It is not a weakly prime, because it can be changed into another prime (20353222079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176611036 + 10176611037.

It is an arithmetic number, because the mean of its divisors is an integer number (10176611037).

Almost surely, 2^20353222073 is an apocalyptic number.

It is an amenable number.

20353222073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20353222073 is an equidigital number, since it uses as much as digits as its factorization.

20353222073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 29.

Adding to 20353222073 its reverse (37022235302), we get a palindrome (57375457375).

The spelling of 20353222073 in words is "twenty billion, three hundred fifty-three million, two hundred twenty-two thousand, seventy-three".