210210011220 has 72 divisors (see below), whose sum is σ = 646960420512. Its totient is φ = 50960000960.

The previous prime is 210210011159. The next prime is 210210011251. The reversal of 210210011220 is 22110012012.

210210011220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210210011220² (a number of 23 digits) contains 22 as substring.

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 = 210210011196 and 210210011205.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 14470014 + ... + 14484533.

It is an arithmetic number, because the mean of its divisors is an integer number (8985561396).

Almost surely, 2^210210011220 is an apocalyptic number.

210210011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210210011220 is an abundant number, since it is smaller than the sum of its proper divisors (436750409292).

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

210210011220 is a wasteful number, since it uses less digits than its factorization.

210210011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28954581 (or 28954568 counting only the distinct ones).

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

Adding to 210210011220 its reverse (22110012012), we get a palindrome (232320023232).

The spelling of 210210011220 in words is "two hundred ten billion, two hundred ten million, eleven thousand, two hundred twenty".