1111122110221 has 8 divisors (see below), whose sum is σ = 1136816290688. Its totient is φ = 1085669190000.

The previous prime is 1111122110183. The next prime is 1111122110233. The reversal of 1111122110221 is 1220112211111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111122110221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111122110195 and 1111122110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111122110251) 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, 60305745 + ... + 60324166.

It is an arithmetic number, because the mean of its divisors is an integer number (142102036336).

Almost surely, 2^{1111122110221} is an apocalyptic number.

It is an amenable number.

1111122110221 is a deficient number, since it is larger than the sum of its proper divisors (25694180467).

1111122110221 is a wasteful number, since it uses less digits than its factorization.

1111122110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120630123.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1111122110221 its reverse (1220112211111), we get a palindrome (2331234321332).

The spelling of 1111122110221 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, one hundred ten thousand, two hundred twenty-one".