121202020119 has 4 divisors (see below), whose sum is σ = 161602693496. Its totient is φ = 80801346744.

The previous prime is 121202020099. The next prime is 121202020123. The reversal of 121202020119 is 911020202121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911020202121 = 3 ⋅303673400707.

It is not a de Polignac number, because 121202020119 - 2²⁰ = 121200971543 is a prime.

It is a super-2 number, since 2×121202020119² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121202020095 and 121202020104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202020019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20200336684 + ... + 20200336689.

It is an arithmetic number, because the mean of its divisors is an integer number (40400673374).

Almost surely, 2^121202020119 is an apocalyptic number.

121202020119 is a deficient number, since it is larger than the sum of its proper divisors (40400673377).

121202020119 is an equidigital number, since it uses as much as digits as its factorization.

121202020119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40400673376.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 121202020119 in words is "one hundred twenty-one billion, two hundred two million, twenty thousand, one hundred nineteen".