222220021212012 has 12 divisors (see below), whose sum is σ = 518513382828056. Its totient is φ = 74073340404000.

The previous prime is 222220021211987. The next prime is 222220021212017. The reversal of 222220021212012 is 210212120022222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 222220021212012.

It is not an unprimeable number, because it can be changed into a prime (222220021212017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9259167550489 + ... + 9259167550512.

Almost surely, 2^{222220021212012} is an apocalyptic number.

It is an amenable number.

222220021212012 is an abundant number, since it is smaller than the sum of its proper divisors (296293361616044).

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

222220021212012 is a wasteful number, since it uses less digits than its factorization.

222220021212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18518335101008 (or 18518335101006 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222220021212012 its reverse (210212120022222), we get a palindrome (432432141234234).

The spelling of 222220021212012 in words is "two hundred twenty-two trillion, two hundred twenty billion, twenty-one million, two hundred twelve thousand, twelve".