1100213031121 has 4 divisors (see below), whose sum is σ = 1100215407600. Its totient is φ = 1100210654644.

The previous prime is 1100213031119. The next prime is 1100213031143. The reversal of 1100213031121 is 1211303120011.

It is a happy number.

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 1100213031121 - 2¹ = 1100213031119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100213031095 and 1100213031104.

It is not an unprimeable number, because it can be changed into a prime (1100213031191) 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, 243331 + ... + 1503208.

It is an arithmetic number, because the mean of its divisors is an integer number (275053851900).

Almost surely, 2^{1100213031121} is an apocalyptic number.

It is an amenable number.

1100213031121 is a deficient number, since it is larger than the sum of its proper divisors (2376479).

1100213031121 is an equidigital number, since it uses as much as digits as its factorization.

1100213031121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376478.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1100213031121 its reverse (1211303120011), we get a palindrome (2311516151132).

The spelling of 1100213031121 in words is "one trillion, one hundred billion, two hundred thirteen million, thirty-one thousand, one hundred twenty-one".