1121020020221 has 8 divisors (see below), whose sum is σ = 1132431391488. Its totient is φ = 1109614770000.

The previous prime is 1121020020203. The next prime is 1121020020223. The reversal of 1121020020221 is 1220200201211.

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 1121020020221 - 2⁶ = 1121020020157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121020020196 and 1121020020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121020020223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161665 + ... + 1895126.

It is an arithmetic number, because the mean of its divisors is an integer number (141553923936).

Almost surely, 2^{1121020020221} is an apocalyptic number.

It is an amenable number.

1121020020221 is a deficient number, since it is larger than the sum of its proper divisors (11411371267).

1121020020221 is a wasteful number, since it uses less digits than its factorization.

1121020020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060523.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1121020020221 its reverse (1220200201211), we get a palindrome (2341220221432).

The spelling of 1121020020221 in words is "one trillion, one hundred twenty-one billion, twenty million, twenty thousand, two hundred twenty-one".