1122222231121 has 2 divisors, whose sum is σ = 1122222231122. Its totient is φ = 1122222231120.

The previous prime is 1122222231071. The next prime is 1122222231199. The reversal of 1122222231121 is 1211322222211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706332670096 + 415889561025 = 840436^2 + 644895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122222231121 - 2¹⁷ = 1122222100049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122222231092 and 1122222231101.

It is not a weakly prime, because it can be changed into another prime (1122222231821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561111115560 + 561111115561.

It is an arithmetic number, because the mean of its divisors is an integer number (561111115561).

Almost surely, 2^{1122222231121} is an apocalyptic number.

It is an amenable number.

1122222231121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122222231121 is an equidigital number, since it uses as much as digits as its factorization.

1122222231121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 22.

Adding to 1122222231121 its reverse (1211322222211), we get a palindrome (2333544453332).

The spelling of 1122222231121 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred thirty-one thousand, one hundred twenty-one".