1001022013 has 4 divisors (see below), whose sum is σ = 1028076700. Its totient is φ = 973967328.

The previous prime is 1001022007. The next prime is 1001022047. The reversal of 1001022013 is 3102201001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 407514969 + 593507044 = 20187^2 + 24362^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001022013 - 2⁵ = 1001021981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001022053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13527288 + ... + 13527361.

It is an arithmetic number, because the mean of its divisors is an integer number (257019175).

Almost surely, 2^1001022013 is an apocalyptic number.

It is an amenable number.

1001022013 is a deficient number, since it is larger than the sum of its proper divisors (27054687).

1001022013 is an equidigital number, since it uses as much as digits as its factorization.

1001022013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27054686.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1001022013 is about 31638.9319193932. The cubic root of 1001022013 is about 1000.3405550091.

Adding to 1001022013 its reverse (3102201001), we get a palindrome (4103223014).

It can be divided in two parts, 10010 and 22013, that added together give a palindrome (32023).

The spelling of 1001022013 in words is "one billion, one million, twenty-two thousand, thirteen".