1121122002221 has 4 divisors (see below), whose sum is σ = 1207362156252. Its totient is φ = 1034881848192.

The previous prime is 1121122002193. The next prime is 1121122002233. The reversal of 1121122002221 is 1222002211211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 657946477321 + 463175524900 = 811139^2 + 680570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121122002221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121122002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121122004221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43120076996 + ... + 43120077021.

It is an arithmetic number, because the mean of its divisors is an integer number (301840539063).

Almost surely, 2^{1121122002221} is an apocalyptic number.

It is an amenable number.

1121122002221 is a deficient number, since it is larger than the sum of its proper divisors (86240154031).

1121122002221 is an equidigital number, since it uses as much as digits as its factorization.

1121122002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86240154030.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1121122002221 its reverse (1222002211211), we get a palindrome (2343124213432).

The spelling of 1121122002221 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, two thousand, two hundred twenty-one".