212120201000011 has 2 divisors, whose sum is σ = 212120201000012. Its totient is φ = 212120201000010.

The previous prime is 212120200999991. The next prime is 212120201000047. The reversal of 212120201000011 is 110000102021212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212120201000011 - 2⁴¹ = 209921177744459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212120200999955 and 212120201000000.

It is not a weakly prime, because it can be changed into another prime (212120201000611) 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, 106060100500005 + 106060100500006.

It is an arithmetic number, because the mean of its divisors is an integer number (106060100500006).

Almost surely, 2^{212120201000011} is an apocalyptic number.

212120201000011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120201000011 is an equidigital number, since it uses as much as digits as its factorization.

212120201000011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212120201000011 its reverse (110000102021212), we get a palindrome (322120303021223).

The spelling of 212120201000011 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred one million, eleven", and thus it is an aban number.