1001151225091 has 2 divisors, whose sum is σ = 1001151225092. Its totient is φ = 1001151225090.

The previous prime is 1001151225037. The next prime is 1001151225143. The reversal of 1001151225091 is 1905221511001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001151225091 - 2¹³ = 1001151216899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001151225031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500575612545 + 500575612546.

It is an arithmetic number, because the mean of its divisors is an integer number (500575612546).

Almost surely, 2^{1001151225091} is an apocalyptic number.

1001151225091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001151225091 is an equidigital number, since it uses as much as digits as its factorization.

1001151225091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 28.

Adding to 1001151225091 its reverse (1905221511001), we get a palindrome (2906372736092).

The spelling of 1001151225091 in words is "one trillion, one billion, one hundred fifty-one million, two hundred twenty-five thousand, ninety-one".