10121112091 has 2 divisors, whose sum is σ = 10121112092. Its totient is φ = 10121112090.

The previous prime is 10121112041. The next prime is 10121112103. The reversal of 10121112091 is 19021112101.

It is a strong prime.

It is an emirp because it is prime and its reverse (19021112101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10121112091 - 2¹⁹ = 10120587803 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121112041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060556045 + 5060556046.

It is an arithmetic number, because the mean of its divisors is an integer number (5060556046).

Almost surely, 2^10121112091 is an apocalyptic number.

10121112091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121112091 is an equidigital number, since it uses as much as digits as its factorization.

10121112091 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 19.

Adding to 10121112091 its reverse (19021112101), we get a palindrome (29142224192).

The spelling of 10121112091 in words is "ten billion, one hundred twenty-one million, one hundred twelve thousand, ninety-one".