1021112077 has 2 divisors, whose sum is σ = 1021112078. Its totient is φ = 1021112076.

The previous prime is 1021112047. The next prime is 1021112111. The reversal of 1021112077 is 7702111201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1017227236 + 3884841 = 31894^2 + 1971^2 .

It is an emirp because it is prime and its reverse (7702111201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021112077 - 2¹¹ = 1021110029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021112017) 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, 510556038 + 510556039.

It is an arithmetic number, because the mean of its divisors is an integer number (510556039).

Almost surely, 2^1021112077 is an apocalyptic number.

It is an amenable number.

1021112077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021112077 is an equidigital number, since it uses as much as digits as its factorization.

1021112077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 22.

The square root of 1021112077 is about 31954.8443432291. The cubic root of 1021112077 is about 1006.9884073958.

Adding to 1021112077 its reverse (7702111201), we get a palindrome (8723223278).

The spelling of 1021112077 in words is "one billion, twenty-one million, one hundred twelve thousand, seventy-seven".