1121122221101 has 4 divisors (see below), whose sum is σ = 1121438300832. Its totient is φ = 1120806141372.

The previous prime is 1121122221073. The next prime is 1121122221143. The reversal of 1121122221101 is 1011222211211.

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 1121122221101 - 2³⁴ = 1103942351917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121122221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121122221151) 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 3 ways as a sum of consecutive naturals, for example, 158034545 + ... + 158041638.

It is an arithmetic number, because the mean of its divisors is an integer number (280359575208).

Almost surely, 2^{1121122221101} is an apocalyptic number.

It is an amenable number.

1121122221101 is a deficient number, since it is larger than the sum of its proper divisors (316079731).

1121122221101 is an equidigital number, since it uses as much as digits as its factorization.

1121122221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316079730.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1121122221101 its reverse (1011222211211), we get a palindrome (2132344432312).

The spelling of 1121122221101 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred one".