20310100212 has 12 divisors (see below), whose sum is σ = 47390233856. Its totient is φ = 6770033400.

The previous prime is 20310100183. The next prime is 20310100253. The reversal of 20310100212 is 21200101302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1692508351 = 20310100212 / (2 + 0 + 3 + 1 + 0 + 1 + 0 + 0 + 2 + 1 + 2).

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 in 3 ways as a sum of consecutive naturals, for example, 846254164 + ... + 846254187.

Almost surely, 2^20310100212 is an apocalyptic number.

It is an amenable number.

20310100212 is an abundant number, since it is smaller than the sum of its proper divisors (27080133644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310100212 is a wasteful number, since it uses less digits than its factorization.

20310100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692508358 (or 1692508356 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20310100212 its reverse (21200101302), we get a palindrome (41510201514).

The spelling of 20310100212 in words is "twenty billion, three hundred ten million, one hundred thousand, two hundred twelve".