1006522121 has 4 divisors (see below), whose sum is σ = 1098024144. Its totient is φ = 915020100.

The previous prime is 1006522103. The next prime is 1006522147. The reversal of 1006522121 is 1212256001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1212256001 = 11 ⋅110205091.

It is a cyclic number.

It is not a de Polignac number, because 1006522121 - 2¹⁰ = 1006521097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1006522093 and 1006522102.

It is not an unprimeable number, because it can be changed into a prime (1006522151) 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 in 3 ways as a sum of consecutive naturals, for example, 45750995 + ... + 45751016.

It is an arithmetic number, because the mean of its divisors is an integer number (274506036).

Almost surely, 2^1006522121 is an apocalyptic number.

1006522121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1006522121 is a deficient number, since it is larger than the sum of its proper divisors (91502023).

1006522121 is an equidigital number, since it uses as much as digits as its factorization.

1006522121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91502022.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1006522121 is about 31725.7327890153. The cubic root of 1006522121 is about 1002.1693309337.

Adding to 1006522121 its reverse (1212256001), we get a palindrome (2218778122).

The spelling of 1006522121 in words is "one billion, six million, five hundred twenty-two thousand, one hundred twenty-one".