121011120199999 has 2 divisors, whose sum is σ = 121011120200000. Its totient is φ = 121011120199998.

The previous prime is 121011120199973. The next prime is 121011120200017. The reversal of 121011120199999 is 999991021110121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121011120199999 - 2⁴¹ = 118812096944447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121011120199199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505560099999 + 60505560100000.

It is an arithmetic number, because the mean of its divisors is an integer number (60505560100000).

Almost surely, 2^{121011120199999} is an apocalyptic number.

121011120199999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011120199999 is an equidigital number, since it uses as much as digits as its factorization.

121011120199999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 55.

The spelling of 121011120199999 in words is "one hundred twenty-one trillion, eleven billion, one hundred twenty million, one hundred ninety-nine thousand, nine hundred ninety-nine".