1121202220121 has 8 divisors (see below), whose sum is σ = 1125602763264. Its totient is φ = 1116801971200.

The previous prime is 1121202220093. The next prime is 1121202220123. The reversal of 1121202220121 is 1210222021211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121202220121 - 2³⁰ = 1120128478297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121202220121.

It is not an unprimeable number, because it can be changed into a prime (1121202220123) 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 7 ways as a sum of consecutive naturals, for example, 10574456 + ... + 10679958.

It is an arithmetic number, because the mean of its divisors is an integer number (140700345408).

Almost surely, 2^{1121202220121} is an apocalyptic number.

It is an amenable number.

1121202220121 is a deficient number, since it is larger than the sum of its proper divisors (4400543143).

1121202220121 is a wasteful number, since it uses less digits than its factorization.

1121202220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147111.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1121202220121 its reverse (1210222021211), we get a palindrome (2331424241332).

The spelling of 1121202220121 in words is "one trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty thousand, one hundred twenty-one".