10212112091 has 2 divisors, whose sum is σ = 10212112092. Its totient is φ = 10212112090.

The previous prime is 10212112087. The next prime is 10212112103. The reversal of 10212112091 is 19021121201.

10212112091 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 10212112091 - 2² = 10212112087 is a prime.

It is not a weakly prime, because it can be changed into another prime (10212112021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106056045 + 5106056046.

It is an arithmetic number, because the mean of its divisors is an integer number (5106056046).

Almost surely, 2^10212112091 is an apocalyptic number.

10212112091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212112091 is an equidigital number, since it uses as much as digits as its factorization.

10212112091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 10212112091 its reverse (19021121201), we get a palindrome (29233233292).

It can be divided in two parts, 1021 and 2112091, that added together give a palindrome (2113112).

The spelling of 10212112091 in words is "ten billion, two hundred twelve million, one hundred twelve thousand, ninety-one".