1100021322121 has 4 divisors (see below), whose sum is σ = 1157917181200. Its totient is φ = 1042125463044.

The previous prime is 1100021322031. The next prime is 1100021322157. The reversal of 1100021322121 is 1212231200011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100021322121 - 2²⁵ = 1099987767689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100021322095 and 1100021322104.

It is not an unprimeable number, because it can be changed into a prime (1100021322221) 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, 28947929511 + ... + 28947929548.

It is an arithmetic number, because the mean of its divisors is an integer number (289479295300).

Almost surely, 2^{1100021322121} is an apocalyptic number.

It is an amenable number.

1100021322121 is a deficient number, since it is larger than the sum of its proper divisors (57895859079).

1100021322121 is an equidigital number, since it uses as much as digits as its factorization.

1100021322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57895859078.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1100021322121 its reverse (1212231200011), we get a palindrome (2312252522132).

The spelling of 1100021322121 in words is "one trillion, one hundred billion, twenty-one million, three hundred twenty-two thousand, one hundred twenty-one".