210110210121220 has 12 divisors (see below), whose sum is σ = 441231441254604. Its totient is φ = 84044084048480.

The previous prime is 210110210121193. The next prime is 210110210121341. The reversal of 210110210121220 is 22121012011012.

It can be written as a sum of positive squares in 2 ways, for example, as 57554709136324 + 152555500984896 = 7586482^2 + 12351336^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210110210121194 and 210110210121203.

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 3 ways as a sum of consecutive naturals, for example, 5252755253011 + ... + 5252755253050.

It is an arithmetic number, because the mean of its divisors is an integer number (36769286771217).

Almost surely, 2^{210110210121220} is an apocalyptic number.

210110210121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210110210121220 is an abundant number, since it is smaller than the sum of its proper divisors (231121231133384).

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

210110210121220 is a wasteful number, since it uses less digits than its factorization.

210110210121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10505510506070 (or 10505510506068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210110210121220 its reverse (22121012011012), we get a palindrome (232231222132232).

The spelling of 210110210121220 in words is "two hundred ten trillion, one hundred ten billion, two hundred ten million, one hundred twenty-one thousand, two hundred twenty".