1214021020811 has 2 divisors, whose sum is σ = 1214021020812. Its totient is φ = 1214021020810.

The previous prime is 1214021020799. The next prime is 1214021020831. The reversal of 1214021020811 is 1180201204121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1214021020811 - 2¹⁰ = 1214021019787 is a prime.

It is not a weakly prime, because it can be changed into another prime (1214021020831) 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 as a sum of consecutive naturals, namely, 607010510405 + 607010510406.

It is an arithmetic number, because the mean of its divisors is an integer number (607010510406).

Almost surely, 2^{1214021020811} is an apocalyptic number.

1214021020811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214021020811 is an equidigital number, since it uses as much as digits as its factorization.

1214021020811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 23.

Adding to 1214021020811 its reverse (1180201204121), we get a palindrome (2394222224932).

The spelling of 1214021020811 in words is "one trillion, two hundred fourteen billion, twenty-one million, twenty thousand, eight hundred eleven".