20001101221212 has 48 divisors (see below), whose sum is σ = 48034089126912. Its totient is φ = 6472833111360.

The previous prime is 20001101221193. The next prime is 20001101221217. The reversal of 20001101221212 is 21212210110002.

20001101221212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20001101221212² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20001101221191 and 20001101221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001101221217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48441864 + ... + 48853007.

It is an arithmetic number, because the mean of its divisors is an integer number (1000710190144).

Almost surely, 2^{20001101221212} is an apocalyptic number.

It is an amenable number.

20001101221212 is an abundant number, since it is smaller than the sum of its proper divisors (28032987905700).

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

20001101221212 is a wasteful number, since it uses less digits than its factorization.

20001101221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97295378 (or 97295376 counting only the distinct ones).

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

Adding to 20001101221212 its reverse (21212210110002), we get a palindrome (41213311331214).

The spelling of 20001101221212 in words is "twenty trillion, one billion, one hundred one million, two hundred twenty-one thousand, two hundred twelve".