1120212211221 has 12 divisors (see below), whose sum is σ = 1648614198348. Its totient is φ = 732717420864.

The previous prime is 1120212211219. The next prime is 1120212211241. The reversal of 1120212211221 is 1221122120211.

1120212211221 is a `hidden beast` number, since 1 + 1 + 20 + 212 + 211 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 670392500625 + 449819710596 = 818775^2 + 670686^2 .

It is not a de Polignac number, because 1120212211221 - 2¹ = 1120212211219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120212211194 and 1120212211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120212211241) 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 11 ways as a sum of consecutive naturals, for example, 1174226160 + ... + 1174227113.

It is an arithmetic number, because the mean of its divisors is an integer number (137384516529).

Almost surely, 2^{1120212211221} is an apocalyptic number.

It is an amenable number.

1120212211221 is a deficient number, since it is larger than the sum of its proper divisors (528401987127).

1120212211221 is a wasteful number, since it uses less digits than its factorization.

1120212211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348453332 (or 2348453329 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1120212211221 its reverse (1221122120211), we get a palindrome (2341334331432).

The spelling of 1120212211221 in words is "one trillion, one hundred twenty billion, two hundred twelve million, two hundred eleven thousand, two hundred twenty-one".