101012004091 has 2 divisors, whose sum is σ = 101012004092. Its totient is φ = 101012004090.

The previous prime is 101012004083. The next prime is 101012004103. The reversal of 101012004091 is 190400210101.

It is a weak prime.

It is an emirp because it is prime and its reverse (190400210101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101012004091 - 2³ = 101012004083 is a prime.

It is not a weakly prime, because it can be changed into another prime (101012001091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50506002045 + 50506002046.

It is an arithmetic number, because the mean of its divisors is an integer number (50506002046).

Almost surely, 2^101012004091 is an apocalyptic number.

101012004091 is a deficient number, since it is larger than the sum of its proper divisors (1).

101012004091 is an equidigital number, since it uses as much as digits as its factorization.

101012004091 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 19.

Adding to 101012004091 its reverse (190400210101), we get a palindrome (291412214192).

The spelling of 101012004091 in words is "one hundred one billion, twelve million, four thousand, ninety-one".