1002122047 has 2 divisors, whose sum is σ = 1002122048. Its totient is φ = 1002122046.

The previous prime is 1002121963. The next prime is 1002122063. The reversal of 1002122047 is 7402212001.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7402212001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002122047 - 2¹¹ = 1002119999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002122087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501061023 + 501061024.

It is an arithmetic number, because the mean of its divisors is an integer number (501061024).

Almost surely, 2^1002122047 is an apocalyptic number.

1002122047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002122047 is an equidigital number, since it uses as much as digits as its factorization.

1002122047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 1002122047 is about 31656.3113296543. The cubic root of 1002122047 is about 1000.7068492464.

Adding to 1002122047 its reverse (7402212001), we get a palindrome (8404334048).

The spelling of 1002122047 in words is "one billion, two million, one hundred twenty-two thousand, forty-seven".