210012020221220 has 96 divisors (see below), whose sum is σ = 507482013024000. Its totient is φ = 71510946153984.

The previous prime is 210012020221217. The next prime is 210012020221243. The reversal of 210012020221220 is 22122020210012.

It is a happy number.

210012020221220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 150393986 + ... + 151783974.

It is an arithmetic number, because the mean of its divisors is an integer number (5286270969000).

Almost surely, 2^{210012020221220} is an apocalyptic number.

210012020221220 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 210012020221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253741006512000).

210012020221220 is an abundant number, since it is smaller than the sum of its proper divisors (297469992802780).

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

210012020221220 is a wasteful number, since it uses less digits than its factorization.

210012020221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397397 (or 1397395 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210012020221220 its reverse (22122020210012), we get a palindrome (232134040431232).

The spelling of 210012020221220 in words is "two hundred ten trillion, twelve billion, twenty million, two hundred twenty-one thousand, two hundred twenty".