20012231006 has 4 divisors (see below), whose sum is σ = 30018346512. Its totient is φ = 10006115502.

The previous prime is 20012230993. The next prime is 20012231017. The reversal of 20012231006 is 60013221002.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5003057750 + ... + 5003057753.

It is an arithmetic number, because the mean of its divisors is an integer number (7504586628).

Almost surely, 2^20012231006 is an apocalyptic number.

20012231006 is a deficient number, since it is larger than the sum of its proper divisors (10006115506).

20012231006 is a wasteful number, since it uses less digits than its factorization.

20012231006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006115505.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20012231006 its reverse (60013221002), we get a palindrome (80025452008).

The spelling of 20012231006 in words is "twenty billion, twelve million, two hundred thirty-one thousand, six".