210220122121002 has 288 divisors, whose sum is σ = 562792011005952. Its totient is φ = 58784850807984.

The previous prime is 210220122120989. The next prime is 210220122121013. The reversal of 210220122121002 is 200121221022012.

It is a happy number.

210220122121002 is a `hidden beast` number, since 2 + 10 + 220 + 1 + 221 + 210 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 383631703 + ... + 384179285.

It is an arithmetic number, because the mean of its divisors is an integer number (1954138927104).

Almost surely, 2^{210220122121002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210220122121002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281396005502976).

210220122121002 is an abundant number, since it is smaller than the sum of its proper divisors (352571888884950).

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

210220122121002 is an frugal number, since it uses more digits than its factorization.

210220122121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547682 (or 547642 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210220122121002 its reverse (200121221022012), we get a palindrome (410341343143014).

The spelling of 210220122121002 in words is "two hundred ten trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twenty-one thousand, two".