1100112221121 has 8 divisors (see below), whose sum is σ = 1506459978624. Its totient is φ = 713586305520.

The previous prime is 1100112221119. The next prime is 1100112221137. The reversal of 1100112221121 is 1211222110011.

It is a happy number.

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

It is not a de Polignac number, because 1100112221121 - 2¹ = 1100112221119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100112221121.

It is not an unprimeable number, because it can be changed into a prime (1100112221101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4955460345 + ... + 4955460566.

It is an arithmetic number, because the mean of its divisors is an integer number (188307497328).

Almost surely, 2^{1100112221121} is an apocalyptic number.

It is an amenable number.

1100112221121 is a deficient number, since it is larger than the sum of its proper divisors (406347757503).

1100112221121 is an equidigital number, since it uses as much as digits as its factorization.

1100112221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9910920951.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1100112221121 its reverse (1211222110011), we get a palindrome (2311334331132).

The spelling of 1100112221121 in words is "one trillion, one hundred billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-one".