10120091 has 2 divisors, whose sum is σ = 10120092. Its totient is φ = 10120090.

The previous prime is 10120081. The next prime is 10120109. The reversal of 10120091 is 19002101.

Together with next prime (10120109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10120091 - 2¹⁴ = 10103707 is a prime.

It is not a weakly prime, because it can be changed into another prime (10120021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060045 + 5060046.

It is an arithmetic number, because the mean of its divisors is an integer number (5060046).

Almost surely, 2^10120091 is an apocalyptic number.

10120091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120091 is an equidigital number, since it uses as much as digits as its factorization.

10120091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 10120091 is about 3181.2090468877. The cubic root of 10120091 is about 216.3024669156.

Adding to 10120091 its reverse (19002101), we get a palindrome (29122192).

The spelling of 10120091 in words is "ten million, one hundred twenty thousand, ninety-one".