1200511221047 has 2 divisors, whose sum is σ = 1200511221048. Its totient is φ = 1200511221046.

The previous prime is 1200511220983. The next prime is 1200511221121. The reversal of 1200511221047 is 7401221150021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200511221047 - 2⁶ = 1200511220983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200511221347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600255610523 + 600255610524.

It is an arithmetic number, because the mean of its divisors is an integer number (600255610524).

Almost surely, 2^{1200511221047} is an apocalyptic number.

1200511221047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200511221047 is an equidigital number, since it uses as much as digits as its factorization.

1200511221047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 1200511221047 its reverse (7401221150021), we get a palindrome (8601732371068).

The spelling of 1200511221047 in words is "one trillion, two hundred billion, five hundred eleven million, two hundred twenty-one thousand, forty-seven".