21212000110212 has 24 divisors (see below), whose sum is σ = 50832360625536. Its totient is φ = 6879567603168.

The previous prime is 21212000110199. The next prime is 21212000110247. The reversal of 21212000110212 is 21201100021212.

It is a super-3 number, since 3×21212000110212³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21212000110191 and 21212000110200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23887387068 + ... + 23887387955.

It is an arithmetic number, because the mean of its divisors is an integer number (2118015026064).

Almost surely, 2^{21212000110212} is an apocalyptic number.

It is an amenable number.

21212000110212 is an abundant number, since it is smaller than the sum of its proper divisors (29620360515324).

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

21212000110212 is a wasteful number, since it uses less digits than its factorization.

21212000110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47774775067 (or 47774775065 counting only the distinct ones).

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

Adding to 21212000110212 its reverse (21201100021212), we get a palindrome (42413100131424).

The spelling of 21212000110212 in words is "twenty-one trillion, two hundred twelve billion, one hundred ten thousand, two hundred twelve".