210101102220 has 96 divisors (see below), whose sum is σ = 601596979200. Its totient is φ = 54766782720.

The previous prime is 210101102209. The next prime is 210101102279. The reversal of 210101102220 is 22201101012.

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 = 210101102196 and 210101102205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 739881 + ... + 983679.

It is an arithmetic number, because the mean of its divisors is an integer number (6266635200).

Almost surely, 2^210101102220 is an apocalyptic number.

210101102220 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 210101102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300798489600).

210101102220 is an abundant number, since it is smaller than the sum of its proper divisors (391495876980).

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

210101102220 is a wasteful number, since it uses less digits than its factorization.

210101102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244135 (or 244133 counting only the distinct ones).

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

Adding to 210101102220 its reverse (22201101012), we get a palindrome (232302203232).

The spelling of 210101102220 in words is "two hundred ten billion, one hundred one million, one hundred two thousand, two hundred twenty".