1011112001897 has 2 divisors, whose sum is σ = 1011112001898. Its totient is φ = 1011112001896.

The previous prime is 1011112001849. The next prime is 1011112001953. The reversal of 1011112001897 is 7981002111101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 597522816016 + 413589185881 = 772996^2 + 643109^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011112001897 - 2¹⁶ = 1011111936361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011112001827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505556000948 + 505556000949.

It is an arithmetic number, because the mean of its divisors is an integer number (505556000949).

Almost surely, 2^{1011112001897} is an apocalyptic number.

It is an amenable number.

1011112001897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011112001897 is an equidigital number, since it uses as much as digits as its factorization.

1011112001897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 32.

Adding to 1011112001897 its reverse (7981002111101), we get a palindrome (8992114112998).

The spelling of 1011112001897 in words is "one trillion, eleven billion, one hundred twelve million, one thousand, eight hundred ninety-seven".