210331212122 has 16 divisors (see below), whose sum is σ = 327046239360. Its totient is φ = 101330692848.

The previous prime is 210331212121. The next prime is 210331212137. The reversal of 210331212122 is 221212133012.

It is a junction number, because it is equal to n+sod(n) for n = 210331212094 and 210331212103.

It is not an unprimeable number, because it can be changed into a prime (210331212121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3694958 + ... + 3751449.

It is an arithmetic number, because the mean of its divisors is an integer number (20440389960).

Almost surely, 2^210331212122 is an apocalyptic number.

210331212122 is a deficient number, since it is larger than the sum of its proper divisors (116715027238).

210331212122 is a wasteful number, since it uses less digits than its factorization.

210331212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7446925.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 210331212122 its reverse (221212133012), we get a palindrome (431543345134).

The spelling of 210331212122 in words is "two hundred ten billion, three hundred thirty-one million, two hundred twelve thousand, one hundred twenty-two".