121201022199 has 4 divisors (see below), whose sum is σ = 161601362936. Its totient is φ = 80800681464.

The previous prime is 121201022161. The next prime is 121201022209. The reversal of 121201022199 is 991220102121.

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

It is not a de Polignac number, because 121201022199 - 2²⁵ = 121167467767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201022119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20200170364 + ... + 20200170369.

It is an arithmetic number, because the mean of its divisors is an integer number (40400340734).

Almost surely, 2^121201022199 is an apocalyptic number.

121201022199 is a deficient number, since it is larger than the sum of its proper divisors (40400340737).

121201022199 is an equidigital number, since it uses as much as digits as its factorization.

121201022199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40400340736.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 121201022199 in words is "one hundred twenty-one billion, two hundred one million, twenty-two thousand, one hundred ninety-nine".