1119861788921 has 2 divisors, whose sum is σ = 1119861788922. Its totient is φ = 1119861788920.

The previous prime is 1119861788917. The next prime is 1119861788939. The reversal of 1119861788921 is 1298871689111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1118517760000 + 1344028921 = 1057600^2 + 36661^2 .

It is a cyclic number.

It is not a de Polignac number, because 1119861788921 - 2² = 1119861788917 is a prime.

It is not a weakly prime, because it can be changed into another prime (1119861788951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559930894460 + 559930894461.

It is an arithmetic number, because the mean of its divisors is an integer number (559930894461).

Almost surely, 2^{1119861788921} is an apocalyptic number.

It is an amenable number.

1119861788921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1119861788921 is an equidigital number, since it uses as much as digits as its factorization.

1119861788921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 62.

The spelling of 1119861788921 in words is "one trillion, one hundred nineteen billion, eight hundred sixty-one million, seven hundred eighty-eight thousand, nine hundred twenty-one".