210220220121212 has 96 divisors (see below), whose sum is σ = 435598219929600. Its totient is φ = 86855741586432.

The previous prime is 210220220121209. The next prime is 210220220121251. The reversal of 210220220121212 is 212121022022012.

It is a congruent number.

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, 5980132628 + ... + 5980167780.

It is an arithmetic number, because the mean of its divisors is an integer number (4537481457600).

Almost surely, 2^{210220220121212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210220220121212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217799109964800).

210220220121212 is an abundant number, since it is smaller than the sum of its proper divisors (225377999808388).

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

210220220121212 is a wasteful number, since it uses less digits than its factorization.

210220220121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46155 (or 46153 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210220220121212 its reverse (212121022022012), we get a palindrome (422341242143224).

The spelling of 210220220121212 in words is "two hundred ten trillion, two hundred twenty billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twelve".