212221020210 has 16 divisors (see below), whose sum is σ = 509330448576. Its totient is φ = 56592272048.

The previous prime is 212221020197. The next prime is 212221020251. The reversal of 212221020210 is 12020122212.

212221020210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212221020210² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212221020210.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3537016974 + ... + 3537017033.

It is an arithmetic number, because the mean of its divisors is an integer number (31833153036).

Almost surely, 2^212221020210 is an apocalyptic number.

212221020210 is an abundant number, since it is smaller than the sum of its proper divisors (297109428366).

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

212221020210 is a wasteful number, since it uses less digits than its factorization.

212221020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074034017.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212221020210 its reverse (12020122212), we get a palindrome (224241142422).

The spelling of 212221020210 in words is "two hundred twelve billion, two hundred twenty-one million, twenty thousand, two hundred ten".