210001222212 has 24 divisors (see below), whose sum is σ = 491771822976. Its totient is φ = 69747697248.

The previous prime is 210001222199. The next prime is 210001222243. The reversal of 210001222212 is 212222100012.

It is a junction number, because it is equal to n+sod(n) for n = 210001222191 and 210001222200.

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, 31585308 + ... + 31591955.

It is an arithmetic number, because the mean of its divisors is an integer number (20490492624).

Almost surely, 2^210001222212 is an apocalyptic number.

It is an amenable number.

210001222212 is an abundant number, since it is smaller than the sum of its proper divisors (281770600764).

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

210001222212 is a wasteful number, since it uses less digits than its factorization.

210001222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63177547 (or 63177545 counting only the distinct ones).

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

Adding to 210001222212 its reverse (212222100012), we get a palindrome (422223322224).

The spelling of 210001222212 in words is "two hundred ten billion, one million, two hundred twenty-two thousand, two hundred twelve".