20010011206 has 4 divisors (see below), whose sum is σ = 30015016812. Its totient is φ = 10005005602.

The previous prime is 20010011191. The next prime is 20010011207. The reversal of 20010011206 is 60211001002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010011207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002502800 + ... + 5002502803.

It is an arithmetic number, because the mean of its divisors is an integer number (7503754203).

Almost surely, 2^20010011206 is an apocalyptic number.

20010011206 is a deficient number, since it is larger than the sum of its proper divisors (10005005606).

20010011206 is a wasteful number, since it uses less digits than its factorization.

20010011206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005005605.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20010011206 its reverse (60211001002), we get a palindrome (80221012208).

The spelling of 20010011206 in words is "twenty billion, ten million, eleven thousand, two hundred six".