100020120010091 has 2 divisors, whose sum is σ = 100020120010092. Its totient is φ = 100020120010090.

The previous prime is 100020120010061. The next prime is 100020120010121. The reversal of 100020120010091 is 190010021020001.

It is a balanced prime because it is at equal distance from previous prime (100020120010061) and next prime (100020120010121).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100020120010091 is a prime.

It is not a weakly prime, because it can be changed into another prime (100020120010061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010060005045 + 50010060005046.

It is an arithmetic number, because the mean of its divisors is an integer number (50010060005046).

Almost surely, 2^{100020120010091} is an apocalyptic number.

100020120010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100020120010091 is an equidigital number, since it uses as much as digits as its factorization.

100020120010091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 100020120010091 its reverse (190010021020001), we get a palindrome (290030141030092).

The spelling of 100020120010091 in words is "one hundred trillion, twenty billion, one hundred twenty million, ten thousand, ninety-one".