20100101212 has 48 divisors (see below), whose sum is σ = 36992212992. Its totient is φ = 9538024320.

The previous prime is 20100101201. The next prime is 20100101213. The reversal of 20100101212 is 21210100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100101213) 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 15 ways as a sum of consecutive naturals, for example, 8029153 + ... + 8031655.

It is an arithmetic number, because the mean of its divisors is an integer number (770671104).

Almost surely, 2^20100101212 is an apocalyptic number.

It is an amenable number.

20100101212 is a deficient number, since it is larger than the sum of its proper divisors (16892111780).

20100101212 is a wasteful number, since it uses less digits than its factorization.

20100101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178 (or 3176 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20100101212 its reverse (21210100102), we get a palindrome (41310201314).

The spelling of 20100101212 in words is "twenty billion, one hundred million, one hundred one thousand, two hundred twelve".