210001102220 has 144 divisors (see below), whose sum is σ = 561523310208. Its totient is φ = 65372106240.

The previous prime is 210001102217. The next prime is 210001102237. The reversal of 210001102220 is 22201100012.

It is a happy number.

It is a super-2 number, since 2×210001102220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 642029 + ... + 912251.

It is an arithmetic number, because the mean of its divisors is an integer number (3899467432).

Almost surely, 2^210001102220 is an apocalyptic number.

210001102220 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 210001102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280761655104).

210001102220 is an abundant number, since it is smaller than the sum of its proper divisors (351522207988).

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

210001102220 is a wasteful number, since it uses less digits than its factorization.

210001102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270320 (or 270311 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 210001102220 its reverse (22201100012), we get a palindrome (232202202232).

The spelling of 210001102220 in words is "two hundred ten billion, one million, one hundred two thousand, two hundred twenty".