1121312201851 has 2 divisors, whose sum is σ = 1121312201852. Its totient is φ = 1121312201850.

The previous prime is 1121312201831. The next prime is 1121312201873. The reversal of 1121312201851 is 1581022131211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121312201851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121312201831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560656100925 + 560656100926.

It is an arithmetic number, because the mean of its divisors is an integer number (560656100926).

Almost surely, 2^{1121312201851} is an apocalyptic number.

1121312201851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121312201851 is an equidigital number, since it uses as much as digits as its factorization.

1121312201851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 28.

The spelling of 1121312201851 in words is "one trillion, one hundred twenty-one billion, three hundred twelve million, two hundred one thousand, eight hundred fifty-one".