100211000021220 has 288 divisors, whose sum is σ = 310762421948160. Its totient is φ = 24109592601600.

The previous prime is 100211000021219. The next prime is 100211000021299. The reversal of 100211000021220 is 22120000112001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100211000021196 and 100211000021205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 516953034 + ... + 517146846.

It is an arithmetic number, because the mean of its divisors is an integer number (1079036187320).

Almost surely, 2^{100211000021220} is an apocalyptic number.

100211000021220 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 100211000021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155381210974080).

100211000021220 is an abundant number, since it is smaller than the sum of its proper divisors (210551421926940).

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

100211000021220 is a wasteful number, since it uses less digits than its factorization.

100211000021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194387 (or 194374 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100211000021220 its reverse (22120000112001), we get a palindrome (122331000133221).

The spelling of 100211000021220 in words is "one hundred trillion, two hundred eleven billion, twenty-one thousand, two hundred twenty".