1200111221047 has 2 divisors, whose sum is σ = 1200111221048. Its totient is φ = 1200111221046.

The previous prime is 1200111221033. The next prime is 1200111221069. The reversal of 1200111221047 is 7401221110021.

It is a happy number.

It is an a-pointer prime, because the next prime (1200111221069) can be obtained adding 1200111221047 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200111221047 - 2³⁹ = 650355407159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200511221047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600055610523 + 600055610524.

It is an arithmetic number, because the mean of its divisors is an integer number (600055610524).

Almost surely, 2^{1200111221047} is an apocalyptic number.

1200111221047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200111221047 is an equidigital number, since it uses as much as digits as its factorization.

1200111221047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 1200111221047 its reverse (7401221110021), we get a palindrome (8601332331068).

The spelling of 1200111221047 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred twenty-one thousand, forty-seven".