20011001012006 has 4 divisors (see below), whose sum is σ = 30016501518012. Its totient is φ = 10005500506002.

The previous prime is 20011001011999. The next prime is 20011001012017. The reversal of 20011001012006 is 60021010011002.

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

It is a super-2 number, since 2×20011001012006² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002750253000 + ... + 5002750253003.

It is an arithmetic number, because the mean of its divisors is an integer number (7504125379503).

Almost surely, 2^{20011001012006} is an apocalyptic number.

20011001012006 is a deficient number, since it is larger than the sum of its proper divisors (10005500506006).

20011001012006 is a wasteful number, since it uses less digits than its factorization.

20011001012006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005500506005.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20011001012006 its reverse (60021010011002), we get a palindrome (80032011023008).

The spelling of 20011001012006 in words is "twenty trillion, eleven billion, one million, twelve thousand, six".