20211102212120 has 256 divisors, whose sum is σ = 48879622471680. Its totient is φ = 7502894784000.

The previous prime is 20211102212003. The next prime is 20211102212149. The reversal of 20211102212120 is 2121220111202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3777067445 + ... + 3777072795.

It is an arithmetic number, because the mean of its divisors is an integer number (190936025280).

Almost surely, 2^{20211102212120} is an apocalyptic number.

20211102212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20211102212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24439811235840).

20211102212120 is an abundant number, since it is smaller than the sum of its proper divisors (28668520259560).

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

20211102212120 is a wasteful number, since it uses less digits than its factorization.

20211102212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6042 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20211102212120 its reverse (2121220111202), we get a palindrome (22332322323322).

The spelling of 20211102212120 in words is "twenty trillion, two hundred eleven billion, one hundred two million, two hundred twelve thousand, one hundred twenty".