1121432221061 has 2 divisors, whose sum is σ = 1121432221062. Its totient is φ = 1121432221060.

The previous prime is 1121432221043. The next prime is 1121432221103. The reversal of 1121432221061 is 1601222341211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024206744961 + 97225476100 = 1012031^2 + 311810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121432221061 is a prime.

It is a super-2 number, since 2×1121432221061² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121432221061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121432221561) 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 as a sum of consecutive naturals, namely, 560716110530 + 560716110531.

It is an arithmetic number, because the mean of its divisors is an integer number (560716110531).

Almost surely, 2^{1121432221061} is an apocalyptic number.

It is an amenable number.

1121432221061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121432221061 is an equidigital number, since it uses as much as digits as its factorization.

1121432221061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 1121432221061 its reverse (1601222341211), we get a palindrome (2722654562272).

The spelling of 1121432221061 in words is "one trillion, one hundred twenty-one billion, four hundred thirty-two million, two hundred twenty-one thousand, sixty-one".