212002222122 has 24 divisors (see below), whose sum is σ = 459921835776. Its totient is φ = 70577609256.

The previous prime is 212002222121. The next prime is 212002222231. The reversal of 212002222122 is 221222200212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212002222095 and 212002222104.

It is not an unprimeable number, because it can be changed into a prime (212002222121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7468618 + ... + 7496949.

It is an arithmetic number, because the mean of its divisors is an integer number (19163409824).

Almost surely, 2^212002222122 is an apocalyptic number.

212002222122 is an abundant number, since it is smaller than the sum of its proper divisors (247919613654).

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

212002222122 is a wasteful number, since it uses less digits than its factorization.

212002222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14966362 (or 14966359 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212002222122 its reverse (221222200212), we get a palindrome (433224422334).

The spelling of 212002222122 in words is "two hundred twelve billion, two million, two hundred twenty-two thousand, one hundred twenty-two".