2001200112257 has 2 divisors, whose sum is σ = 2001200112258. Its totient is φ = 2001200112256.

The previous prime is 2001200112227. The next prime is 2001200112269. The reversal of 2001200112257 is 7522110021002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1738281396721 + 262918715536 = 1318439^2 + 512756^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001200112257 - 2¹² = 2001200108161 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001200112227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000600056128 + 1000600056129.

It is an arithmetic number, because the mean of its divisors is an integer number (1000600056129).

Almost surely, 2^{2001200112257} is an apocalyptic number.

It is an amenable number.

2001200112257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001200112257 is an equidigital number, since it uses as much as digits as its factorization.

2001200112257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 2001200112257 its reverse (7522110021002), we get a palindrome (9523310133259).

The spelling of 2001200112257 in words is "two trillion, one billion, two hundred million, one hundred twelve thousand, two hundred fifty-seven".