1121122221061 has 2 divisors, whose sum is σ = 1121122221062. Its totient is φ = 1121122221060.

The previous prime is 1121122220989. The next prime is 1121122221073. The reversal of 1121122221061 is 1601222211211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1121120968900 + 1252161 = 1058830^2 + 1119^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121122221061 - 2²⁵ = 1121088666629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121122251061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560561110530 + 560561110531.

It is an arithmetic number, because the mean of its divisors is an integer number (560561110531).

Almost surely, 2^{1121122221061} is an apocalyptic number.

It is an amenable number.

1121122221061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121122221061 is an equidigital number, since it uses as much as digits as its factorization.

1121122221061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 1121122221061 its reverse (1601222211211), we get a palindrome (2722344432272).

The spelling of 1121122221061 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, sixty-one".