1212120223273 has 2 divisors, whose sum is σ = 1212120223274. Its totient is φ = 1212120223272.

The previous prime is 1212120223231. The next prime is 1212120223357. The reversal of 1212120223273 is 3723220212121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1165682990224 + 46437233049 = 1079668^2 + 215493^2 .

It is an emirp because it is prime and its reverse (3723220212121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212120223273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212120223973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606060111636 + 606060111637.

It is an arithmetic number, because the mean of its divisors is an integer number (606060111637).

Almost surely, 2^{1212120223273} is an apocalyptic number.

It is an amenable number.

1212120223273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212120223273 is an equidigital number, since it uses as much as digits as its factorization.

1212120223273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 1212120223273 its reverse (3723220212121), we get a palindrome (4935340435394).

The spelling of 1212120223273 in words is "one trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty-three thousand, two hundred seventy-three".