1123112220361 has 2 divisors, whose sum is σ = 1123112220362. Its totient is φ = 1123112220360.

The previous prime is 1123112220311. The next prime is 1123112220397. The reversal of 1123112220361 is 1630222113211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1015892647225 + 107219573136 = 1007915^2 + 327444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123112220361 is a prime.

It is a super-2 number, since 2×1123112220361² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123112220301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561556110180 + 561556110181.

It is an arithmetic number, because the mean of its divisors is an integer number (561556110181).

Almost surely, 2^{1123112220361} is an apocalyptic number.

It is an amenable number.

1123112220361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123112220361 is an equidigital number, since it uses as much as digits as its factorization.

1123112220361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1123112220361 its reverse (1630222113211), we get a palindrome (2753334333572).

The spelling of 1123112220361 in words is "one trillion, one hundred twenty-three billion, one hundred twelve million, two hundred twenty thousand, three hundred sixty-one".