1121656201031 has 2 divisors, whose sum is σ = 1121656201032. Its totient is φ = 1121656201030.

The previous prime is 1121656201013. The next prime is 1121656201121. The reversal of 1121656201031 is 1301026561211.

Together with previous prime (1121656201013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121656201031 is a prime.

It is a super-2 number, since 2×1121656201031² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121656200985 and 1121656201003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121656201531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560828100515 + 560828100516.

It is an arithmetic number, because the mean of its divisors is an integer number (560828100516).

Almost surely, 2^{1121656201031} is an apocalyptic number.

1121656201031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121656201031 is an equidigital number, since it uses as much as digits as its factorization.

1121656201031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 1121656201031 in words is "one trillion, one hundred twenty-one billion, six hundred fifty-six million, two hundred one thousand, thirty-one".