110212021009 has 2 divisors, whose sum is σ = 110212021010. Its totient is φ = 110212021008.

The previous prime is 110212021001. The next prime is 110212021033. The reversal of 110212021009 is 900120212011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101026715409 + 9185305600 = 317847^2 + 95840^2 .

It is a cyclic number.

It is not a de Polignac number, because 110212021009 - 2³ = 110212021001 is a prime.

It is not a weakly prime, because it can be changed into another prime (110212021001) 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, 55106010504 + 55106010505.

It is an arithmetic number, because the mean of its divisors is an integer number (55106010505).

Almost surely, 2^110212021009 is an apocalyptic number.

It is an amenable number.

110212021009 is a deficient number, since it is larger than the sum of its proper divisors (1).

110212021009 is an equidigital number, since it uses as much as digits as its factorization.

110212021009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 110212021009 in words is "one hundred ten billion, two hundred twelve million, twenty-one thousand, nine".