20211110103212 has 96 divisors (see below), whose sum is σ = 41846203392000. Its totient is φ = 8358403115520.

The previous prime is 20211110103211. The next prime is 20211110103253. The reversal of 20211110103212 is 21230101111202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20211110103211) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 498785489 + ... + 498826007.

It is an arithmetic number, because the mean of its divisors is an integer number (435897952000).

Almost surely, 2^{20211110103212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20211110103212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20923101696000).

20211110103212 is an abundant number, since it is smaller than the sum of its proper divisors (21635093288788).

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

20211110103212 is a wasteful number, since it uses less digits than its factorization.

20211110103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42199 (or 42197 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20211110103212 its reverse (21230101111202), we get a palindrome (41441211214414).

The spelling of 20211110103212 in words is "twenty trillion, two hundred eleven billion, one hundred ten million, one hundred three thousand, two hundred twelve".