1121138161531 has 2 divisors, whose sum is σ = 1121138161532. Its totient is φ = 1121138161530.

The previous prime is 1121138161477. The next prime is 1121138161571. The reversal of 1121138161531 is 1351618311211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121138161531 - 2²¹ = 1121136064379 is a prime.

It is a super-2 number, since 2×1121138161531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121138161571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560569080765 + 560569080766.

It is an arithmetic number, because the mean of its divisors is an integer number (560569080766).

Almost surely, 2^{1121138161531} is an apocalyptic number.

1121138161531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121138161531 is an equidigital number, since it uses as much as digits as its factorization.

1121138161531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 34.

The spelling of 1121138161531 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-eight million, one hundred sixty-one thousand, five hundred thirty-one".