1121512477 has 2 divisors, whose sum is σ = 1121512478. Its totient is φ = 1121512476.

The previous prime is 1121512433. The next prime is 1121512549. The reversal of 1121512477 is 7742151211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1111488921 + 10023556 = 33339^2 + 3166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121512477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121312477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560756238 + 560756239.

It is an arithmetic number, because the mean of its divisors is an integer number (560756239).

Almost surely, 2^1121512477 is an apocalyptic number.

It is an amenable number.

1121512477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121512477 is an equidigital number, since it uses as much as digits as its factorization.

1121512477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 31.

The square root of 1121512477 is about 33488.9903849011. The cubic root of 1121512477 is about 1038.9660819981.

Adding to 1121512477 its reverse (7742151211), we get a palindrome (8863663688).

The spelling of 1121512477 in words is "one billion, one hundred twenty-one million, five hundred twelve thousand, four hundred seventy-seven".