1021143113 has 2 divisors, whose sum is σ = 1021143114. Its totient is φ = 1021143112.

The previous prime is 1021143073. The next prime is 1021143139. The reversal of 1021143113 is 3113411201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642723904 + 378419209 = 25352^2 + 19453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021143113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021143091 and 1021143100.

It is not a weakly prime, because it can be changed into another prime (1021143143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510571556 + 510571557.

It is an arithmetic number, because the mean of its divisors is an integer number (510571557).

Almost surely, 2^1021143113 is an apocalyptic number.

It is an amenable number.

1021143113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021143113 is an equidigital number, since it uses as much as digits as its factorization.

1021143113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1021143113 is about 31955.3299623083. The cubic root of 1021143113 is about 1006.9986095327.

Adding to 1021143113 its reverse (3113411201), we get a palindrome (4134554314).

The spelling of 1021143113 in words is "one billion, twenty-one million, one hundred forty-three thousand, one hundred thirteen".