100211210221220 has 192 divisors, whose sum is σ = 247525031609856. Its totient is φ = 33359476285440.

The previous prime is 100211210221189. The next prime is 100211210221223. The reversal of 100211210221220 is 22122012112001.

It is not an unprimeable number, because it can be changed into a prime (100211210221223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15773837564 + ... + 15773843916.

It is an arithmetic number, because the mean of its divisors is an integer number (1289192872968).

Almost surely, 2^{100211210221220} is an apocalyptic number.

100211210221220 is a gapful number since it is divisible by the number (10) 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 100211210221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123762515804928).

100211210221220 is an abundant number, since it is smaller than the sum of its proper divisors (147313821388636).

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

100211210221220 is a wasteful number, since it uses less digits than its factorization.

100211210221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310 (or 12308 counting only the distinct ones).

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

Adding to 100211210221220 its reverse (22122012112001), we get a palindrome (122333222333221).

The spelling of 100211210221220 in words is "one hundred trillion, two hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, two hundred twenty".