1021113479 has 2 divisors, whose sum is σ = 1021113480. Its totient is φ = 1021113478.

The previous prime is 1021113439. The next prime is 1021113571. The reversal of 1021113479 is 9743111201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021113479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021113439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510556739 + 510556740.

It is an arithmetic number, because the mean of its divisors is an integer number (510556740).

Almost surely, 2^1021113479 is an apocalyptic number.

1021113479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021113479 is an equidigital number, since it uses as much as digits as its factorization.

1021113479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1021113479 is about 31954.8662804275. The cubic root of 1021113479 is about 1006.9888682650.

The spelling of 1021113479 in words is "one billion, twenty-one million, one hundred thirteen thousand, four hundred seventy-nine".