20001210112212 has 48 divisors (see below), whose sum is σ = 54778088964480. Its totient is φ = 5560181960832.

The previous prime is 20001210112199. The next prime is 20001210112223. The reversal of 20001210112212 is 21221101210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001210112191 and 20001210112200.

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 15 ways as a sum of consecutive naturals, for example, 3217694787 + ... + 3217701002.

It is an arithmetic number, because the mean of its divisors is an integer number (1141210186760).

Almost surely, 2^{20001210112212} is an apocalyptic number.

It is an amenable number.

20001210112212 is an abundant number, since it is smaller than the sum of its proper divisors (34776878852268).

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

20001210112212 is a wasteful number, since it uses less digits than its factorization.

20001210112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6435395840 (or 6435395838 counting only the distinct ones).

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

Adding to 20001210112212 its reverse (21221101210002), we get a palindrome (41222311322214).

The spelling of 20001210112212 in words is "twenty trillion, one billion, two hundred ten million, one hundred twelve thousand, two hundred twelve".