1121222200729 has 2 divisors, whose sum is σ = 1121222200730. Its totient is φ = 1121222200728.

The previous prime is 1121222200711. The next prime is 1121222200831. The reversal of 1121222200729 is 9270022221211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832044987225 + 289177213504 = 912165^2 + 537752^2 .

It is an emirp because it is prime and its reverse (9270022221211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121222200729 - 2¹⁷ = 1121222069657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121222200729.

It is not a weakly prime, because it can be changed into another prime (1121222240729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560611100364 + 560611100365.

It is an arithmetic number, because the mean of its divisors is an integer number (560611100365).

Almost surely, 2^{1121222200729} is an apocalyptic number.

It is an amenable number.

1121222200729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121222200729 is an equidigital number, since it uses as much as digits as its factorization.

1121222200729 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 31.

The spelling of 1121222200729 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred thousand, seven hundred twenty-nine".