12021122120212 has 12 divisors (see below), whose sum is σ = 21037039279956. Its totient is φ = 6010539468800.

The previous prime is 12021122120171. The next prime is 12021122120237. The reversal of 12021122120212 is 21202122112021.

It can be written as a sum of positive squares in 2 ways, for example, as 3290066333316 + 8731055786896 = 1813854^2 + 2954836^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12021122120212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4111039 + ... + 6398662.

It is an arithmetic number, because the mean of its divisors is an integer number (1753086606663).

Almost surely, 2^{12021122120212} is an apocalyptic number.

It is an amenable number.

12021122120212 is a deficient number, since it is larger than the sum of its proper divisors (9015917159744).

12021122120212 is a wasteful number, since it uses less digits than its factorization.

12021122120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10795658 (or 10795656 counting only the distinct ones).

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

Adding to 12021122120212 its reverse (21202122112021), we get a palindrome (33223244232233).

The spelling of 12021122120212 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twelve".