2212201221012 has 48 divisors (see below), whose sum is σ = 5773318902400. Its totient is φ = 732516955200.

The previous prime is 2212201220969. The next prime is 2212201221017. The reversal of 2212201221012 is 2101221022122.

It is a happy number.

2212201221012 is a `hidden beast` number, since 221 + 220 + 1 + 2 + 210 + 12 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212201221017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67809337 + ... + 67841952.

Almost surely, 2^{2212201221012} is an apocalyptic number.

It is an amenable number.

2212201221012 is an abundant number, since it is smaller than the sum of its proper divisors (3561117681388).

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

2212201221012 is a wasteful number, since it uses less digits than its factorization.

2212201221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135651453 (or 135651445 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212201221012 its reverse (2101221022122), we get a palindrome (4313422243134).

The spelling of 2212201221012 in words is "two trillion, two hundred twelve billion, two hundred one million, two hundred twenty-one thousand, twelve".