20100220012 has 6 divisors (see below), whose sum is σ = 35175385028. Its totient is φ = 10050110004.

The previous prime is 20100220009. The next prime is 20100220081. The reversal of 20100220012 is 21002200102.

It is an unprimeable number.

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, 2512527498 + ... + 2512527505.

Almost surely, 2^20100220012 is an apocalyptic number.

It is an amenable number.

20100220012 is a deficient number, since it is larger than the sum of its proper divisors (15075165016).

20100220012 is a wasteful number, since it uses less digits than its factorization.

20100220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025055007 (or 5025055005 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20100220012 its reverse (21002200102), we get a palindrome (41102420114).

The spelling of 20100220012 in words is "twenty billion, one hundred million, two hundred twenty thousand, twelve".