1000010101091 has 2 divisors, whose sum is σ = 1000010101092. Its totient is φ = 1000010101090.

The previous prime is 1000010101087. The next prime is 1000010101133. The reversal of 1000010101091 is 1901010100001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1901010100001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000010101091 - 2² = 1000010101087 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000010101031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500005050545 + 500005050546.

It is an arithmetic number, because the mean of its divisors is an integer number (500005050546).

Almost surely, 2^{1000010101091} is an apocalyptic number.

1000010101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000010101091 is an equidigital number, since it uses as much as digits as its factorization.

1000010101091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 1000010101091 its reverse (1901010100001), we get a palindrome (2901020201092).

The spelling of 1000010101091 in words is "one trillion, ten million, one hundred one thousand, ninety-one".