212012121211201 has 16 divisors (see below), whose sum is σ = 216911815755264. Its totient is φ = 207128929575744.

The previous prime is 212012121211127. The next prime is 212012121211237. The reversal of 212012121211201 is 102112121210212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212012121211201 - 2¹³ = 212012121203009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212012121211301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62780851 + ... + 66071623.

It is an arithmetic number, because the mean of its divisors is an integer number (13556988484704).

Almost surely, 2^{212012121211201} is an apocalyptic number.

It is an amenable number.

212012121211201 is a deficient number, since it is larger than the sum of its proper divisors (4899694544063).

212012121211201 is a wasteful number, since it uses less digits than its factorization.

212012121211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293280.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212012121211201 its reverse (102112121210212), we get a palindrome (314124242421413).

The spelling of 212012121211201 in words is "two hundred twelve trillion, twelve billion, one hundred twenty-one million, two hundred eleven thousand, two hundred one".