11231121049 has 2 divisors, whose sum is σ = 11231121050. Its totient is φ = 11231121048.

The previous prime is 11231121017. The next prime is 11231121059. The reversal of 11231121049 is 94012113211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5752160649 + 5478960400 = 75843^2 + 74020^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231121049 - 2⁵ = 11231121017 is a prime.

It is a super-2 number, since 2×11231121049² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11231121059) 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, 5615560524 + 5615560525.

It is an arithmetic number, because the mean of its divisors is an integer number (5615560525).

Almost surely, 2^11231121049 is an apocalyptic number.

It is an amenable number.

11231121049 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231121049 is an equidigital number, since it uses as much as digits as its factorization.

11231121049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 11231121049 in words is "eleven billion, two hundred thirty-one million, one hundred twenty-one thousand, forty-nine".