1110111210221 has 4 divisors (see below), whose sum is σ = 1195504380252. Its totient is φ = 1024718040192.

The previous prime is 1110111210203. The next prime is 1110111210283. The reversal of 1110111210221 is 1220121110111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 594457962121 + 515653248100 = 771011^2 + 718090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110111210221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1110111210196 and 1110111210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110111210821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42696584996 + ... + 42696585021.

It is an arithmetic number, because the mean of its divisors is an integer number (298876095063).

Almost surely, 2^{1110111210221} is an apocalyptic number.

It is an amenable number.

1110111210221 is a deficient number, since it is larger than the sum of its proper divisors (85393170031).

1110111210221 is an equidigital number, since it uses as much as digits as its factorization.

1110111210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85393170030.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1110111210221 its reverse (1220121110111), we get a palindrome (2330232320332).

The spelling of 1110111210221 in words is "one trillion, one hundred ten billion, one hundred eleven million, two hundred ten thousand, two hundred twenty-one".