1121020302221 has 16 divisors (see below), whose sum is σ = 1151836652736. Its totient is φ = 1090593144576.

The previous prime is 1121020302217. The next prime is 1121020302229. The reversal of 1121020302221 is 1222030201211.

It is a cyclic number.

It is not a de Polignac number, because 1121020302221 - 2² = 1121020302217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121020302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121020302229) 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 15 ways as a sum of consecutive naturals, for example, 3590846 + ... + 3890528.

It is an arithmetic number, because the mean of its divisors is an integer number (71989790796).

Almost surely, 2^{1121020302221} is an apocalyptic number.

It is an amenable number.

1121020302221 is a deficient number, since it is larger than the sum of its proper divisors (30816350515).

1121020302221 is a wasteful number, since it uses less digits than its factorization.

1121020302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300332.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1121020302221 its reverse (1222030201211), we get a palindrome (2343050503432).

It can be divided in two parts, 1121020 and 302221, that added together give a palindrome (1423241).

The spelling of 1121020302221 in words is "one trillion, one hundred twenty-one billion, twenty million, three hundred two thousand, two hundred twenty-one".