12211212020212 has 6 divisors (see below), whose sum is σ = 21369621035378. Its totient is φ = 6105606010104.

The previous prime is 12211212020207. The next prime is 12211212020213. The reversal of 12211212020212 is 21202021211221.

It can be written as a sum of positive squares in only one way, i.e., 11276459505936 + 934752514276 = 3358044^2 + 966826^2 .

It is a super-2 number, since 2×12211212020212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211212020212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211212020213) 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 as a sum of consecutive naturals, namely, 1526401502523 + ... + 1526401502530.

Almost surely, 2^{12211212020212} is an apocalyptic number.

It is an amenable number.

12211212020212 is a deficient number, since it is larger than the sum of its proper divisors (9158409015166).

12211212020212 is a wasteful number, since it uses less digits than its factorization.

12211212020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052803005057 (or 3052803005055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12211212020212 its reverse (21202021211221), we get a palindrome (33413233231433).

The spelling of 12211212020212 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, twenty thousand, two hundred twelve".