12212121220022 has 32 divisors (see below), whose sum is σ = 19575346127040. Its totient is φ = 5693667655680.

The previous prime is 12212121220021. The next prime is 12212121220037. The reversal of 12212121220022 is 22002212121221.

It is a junction number, because it is equal to n+sod(n) for n = 12212121219976 and 12212121220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212121220021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44933183 + ... + 45204149.

It is an arithmetic number, because the mean of its divisors is an integer number (611729566470).

Almost surely, 2^{12212121220022} is an apocalyptic number.

12212121220022 is a deficient number, since it is larger than the sum of its proper divisors (7363224907018).

12212121220022 is a wasteful number, since it uses less digits than its factorization.

12212121220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283256.

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

Adding to 12212121220022 its reverse (22002212121221), we get a palindrome (34214333341243).

The spelling of 12212121220022 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, twenty-two".