1212112001211 has 16 divisors (see below), whose sum is σ = 1671936487200. Its totient is φ = 780183020288.

The previous prime is 1212112001203. The next prime is 1212112001237. The reversal of 1212112001211 is 1121002112121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1212112001211 - 2³ = 1212112001203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212112001411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2459935 + ... + 2911271.

It is an arithmetic number, because the mean of its divisors is an integer number (104496030450).

Almost surely, 2^{1212112001211} is an apocalyptic number.

1212112001211 is a deficient number, since it is larger than the sum of its proper divisors (459824485989).

1212112001211 is a wasteful number, since it uses less digits than its factorization.

1212112001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482238.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1212112001211 its reverse (1121002112121), we get a palindrome (2333114113332).

The spelling of 1212112001211 in words is "one trillion, two hundred twelve billion, one hundred twelve million, one thousand, two hundred eleven".