121011120091 has 2 divisors, whose sum is σ = 121011120092. Its totient is φ = 121011120090.

The previous prime is 121011120071. The next prime is 121011120143. The reversal of 121011120091 is 190021110121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121011120091 - 2¹⁹ = 121010595803 is a prime.

It is not a weakly prime, because it can be changed into another prime (121011120071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505560045 + 60505560046.

It is an arithmetic number, because the mean of its divisors is an integer number (60505560046).

Almost surely, 2^121011120091 is an apocalyptic number.

121011120091 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011120091 is an equidigital number, since it uses as much as digits as its factorization.

121011120091 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 19.

The spelling of 121011120091 in words is "one hundred twenty-one billion, eleven million, one hundred twenty thousand, ninety-one".