1100021221121 has 8 divisors (see below), whose sum is σ = 1126870483200. Its totient is φ = 1073172886560.

The previous prime is 1100021221081. The next prime is 1100021221129. The reversal of 1100021221121 is 1211221200011.

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

It is a cyclic number.

It is not a de Polignac number, because 1100021221121 - 2¹⁸ = 1100020958977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100021221096 and 1100021221105.

It is not an unprimeable number, because it can be changed into a prime (1100021221129) 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, 2580140 + ... + 2976098.

It is an arithmetic number, because the mean of its divisors is an integer number (140858810400).

Almost surely, 2^{1100021221121} is an apocalyptic number.

It is an amenable number.

1100021221121 is a deficient number, since it is larger than the sum of its proper divisors (26849262079).

1100021221121 is an equidigital number, since it uses as much as digits as its factorization.

1100021221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463759.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1100021221121 its reverse (1211221200011), we get a palindrome (2311242421132).

The spelling of 1100021221121 in words is "one trillion, one hundred billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-one".