1020000210091 has 2 divisors, whose sum is σ = 1020000210092. Its totient is φ = 1020000210090.

The previous prime is 1020000210067. The next prime is 1020000210143. The reversal of 1020000210091 is 1900120000201.

1020000210091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020000210091 - 2¹⁵ = 1020000177323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020000210991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510000105045 + 510000105046.

It is an arithmetic number, because the mean of its divisors is an integer number (510000105046).

Almost surely, 2^{1020000210091} is an apocalyptic number.

1020000210091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020000210091 is an equidigital number, since it uses as much as digits as its factorization.

1020000210091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1020000210091 its reverse (1900120000201), we get a palindrome (2920120210292).

The spelling of 1020000210091 in words is "one trillion, twenty billion, two hundred ten thousand, ninety-one".