1200111221213 has 2 divisors, whose sum is σ = 1200111221214. Its totient is φ = 1200111221212.

The previous prime is 1200111221173. The next prime is 1200111221233. The reversal of 1200111221213 is 3121221110021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1199697424249 + 413796964 = 1095307^2 + 20342^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200111221213 - 2¹² = 1200111217117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200111221191 and 1200111221200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200111221233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600055610606 + 600055610607.

It is an arithmetic number, because the mean of its divisors is an integer number (600055610607).

Almost surely, 2^{1200111221213} is an apocalyptic number.

It is an amenable number.

1200111221213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200111221213 is an equidigital number, since it uses as much as digits as its factorization.

1200111221213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1200111221213 its reverse (3121221110021), we get a palindrome (4321332331234).

The spelling of 1200111221213 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred twenty-one thousand, two hundred thirteen".