1011021047 has 2 divisors, whose sum is σ = 1011021048. Its totient is φ = 1011021046.

The previous prime is 1011021013. The next prime is 1011021061. The reversal of 1011021047 is 7401201101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011021047 - 2¹⁴ = 1011004663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011021007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505510523 + 505510524.

It is an arithmetic number, because the mean of its divisors is an integer number (505510524).

Almost surely, 2^1011021047 is an apocalyptic number.

1011021047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011021047 is an equidigital number, since it uses as much as digits as its factorization.

1011021047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 1011021047 is about 31796.5571563967. The cubic root of 1011021047 is about 1003.6602684222.

Adding to 1011021047 its reverse (7401201101), we get a palindrome (8412222148).

The spelling of 1011021047 in words is "one billion, eleven million, twenty-one thousand, forty-seven".