22001212202212 has 24 divisors (see below), whose sum is σ = 40057071165440. Its totient is φ = 10561923046080.

The previous prime is 22001212202197. The next prime is 22001212202269. The reversal of 22001212202212 is 21220221210022.

It is a self number, because there is not a number n which added to its sum of digits gives 22001212202212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698524137 + ... + 698555632.

Almost surely, 2^{22001212202212} is an apocalyptic number.

It is an amenable number.

22001212202212 is a deficient number, since it is larger than the sum of its proper divisors (18055858963228).

22001212202212 is a wasteful number, since it uses less digits than its factorization.

22001212202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397079931 (or 1397079929 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22001212202212 its reverse (21220221210022), we get a palindrome (43221433412234).

The spelling of 22001212202212 in words is "twenty-two trillion, one billion, two hundred twelve million, two hundred two thousand, two hundred twelve".