1222221100273 has 2 divisors, whose sum is σ = 1222221100274. Its totient is φ = 1222221100272.

The previous prime is 1222221100211. The next prime is 1222221100283. The reversal of 1222221100273 is 3720011222221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1213890522289 + 8330577984 = 1101767^2 + 91272^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222221100273 - 2¹⁷ = 1222220969201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222221100283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611110550136 + 611110550137.

It is an arithmetic number, because the mean of its divisors is an integer number (611110550137).

Almost surely, 2^{1222221100273} is an apocalyptic number.

It is an amenable number.

1222221100273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222221100273 is an equidigital number, since it uses as much as digits as its factorization.

1222221100273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 1222221100273 its reverse (3720011222221), we get a palindrome (4942232322494).

The spelling of 1222221100273 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, two hundred seventy-three".