121121020001199 has 4 divisors (see below), whose sum is σ = 161494693334936. Its totient is φ = 80747346667464.

The previous prime is 121121020001173. The next prime is 121121020001209. The reversal of 121121020001199 is 991100020121121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121121020001199 - 2⁷ = 121121020001071 is a prime.

It is a super-2 number, since 2×121121020001199² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121020001899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20186836666864 + ... + 20186836666869.

It is an arithmetic number, because the mean of its divisors is an integer number (40373673333734).

Almost surely, 2^{121121020001199} is an apocalyptic number.

121121020001199 is a deficient number, since it is larger than the sum of its proper divisors (40373673333737).

121121020001199 is an equidigital number, since it uses as much as digits as its factorization.

121121020001199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40373673333736.

The product of its (nonzero) digits is 648, while the sum is 30.

The spelling of 121121020001199 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty million, one thousand, one hundred ninety-nine".