1212220200073 has 2 divisors, whose sum is σ = 1212220200074. Its totient is φ = 1212220200072.

The previous prime is 1212220200071. The next prime is 1212220200119. The reversal of 1212220200073 is 3700020222121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1206508921744 + 5711278329 = 1098412^2 + 75573^2 .

It is an emirp because it is prime and its reverse (3700020222121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212220200073 - 2¹ = 1212220200071 is a prime.

Together with 1212220200071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1212220200071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606110100036 + 606110100037.

It is an arithmetic number, because the mean of its divisors is an integer number (606110100037).

Almost surely, 2^{1212220200073} is an apocalyptic number.

It is an amenable number.

1212220200073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212220200073 is an equidigital number, since it uses as much as digits as its factorization.

1212220200073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 1212220200073 its reverse (3700020222121), we get a palindrome (4912240422194).

The spelling of 1212220200073 in words is "one trillion, two hundred twelve billion, two hundred twenty million, two hundred thousand, seventy-three".