12221001002212 has 6 divisors (see below), whose sum is σ = 21386751753878. Its totient is φ = 6110500501104.

The previous prime is 12221001002153. The next prime is 12221001002233. The reversal of 12221001002212 is 21220010012221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6891801050176 + 5329199952036 = 2625224^2 + 2308506^2 .

It is an unprimeable number.

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, 1527625125273 + ... + 1527625125280.

Almost surely, 2^{12221001002212} is an apocalyptic number.

It is an amenable number.

12221001002212 is a deficient number, since it is larger than the sum of its proper divisors (9165750751666).

12221001002212 is a wasteful number, since it uses less digits than its factorization.

12221001002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055250250557 (or 3055250250555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221001002212 its reverse (21220010012221), we get a palindrome (33441011014433).

The spelling of 12221001002212 in words is "twelve trillion, two hundred twenty-one billion, one million, two thousand, two hundred twelve".