20012021101212 has 96 divisors (see below), whose sum is σ = 57430834191360. Its totient is φ = 5293164395520.

The previous prime is 20012021101201. The next prime is 20012021101213. The reversal of 20012021101212 is 21210112021002.

It is a junction number, because it is equal to n+sod(n) for n = 20012021101191 and 20012021101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012021101213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114781912 + ... + 114956127.

It is an arithmetic number, because the mean of its divisors is an integer number (598237856160).

Almost surely, 2^{20012021101212} is an apocalyptic number.

It is an amenable number.

20012021101212 is an abundant number, since it is smaller than the sum of its proper divisors (37418813090148).

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

20012021101212 is a wasteful number, since it uses less digits than its factorization.

20012021101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229738131 (or 229738129 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20012021101212 its reverse (21210112021002), we get a palindrome (41222133122214).

The spelling of 20012021101212 in words is "twenty trillion, twelve billion, twenty-one million, one hundred one thousand, two hundred twelve".