210100222220 has 96 divisors (see below), whose sum is σ = 509993680896. Its totient is φ = 71214624000.

The previous prime is 210100222219. The next prime is 210100222243. The reversal of 210100222220 is 22222001012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 210100222195 and 210100222204.

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, 9759989 + ... + 9781491.

It is an arithmetic number, because the mean of its divisors is an integer number (5312434176).

Almost surely, 2^210100222220 is an apocalyptic number.

210100222220 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 210100222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254996840448).

210100222220 is an abundant number, since it is smaller than the sum of its proper divisors (299893458676).

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

210100222220 is a wasteful number, since it uses less digits than its factorization.

210100222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22311 (or 22309 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 210100222220 its reverse (22222001012), we get a palindrome (232322223232).

The spelling of 210100222220 in words is "two hundred ten billion, one hundred million, two hundred twenty-two thousand, two hundred twenty".