1209981262211 has 8 divisors (see below), whose sum is σ = 1225319705280. Its totient is φ = 1194643374912.

The previous prime is 1209981262199. The next prime is 1209981262219. The reversal of 1209981262211 is 1122621899021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1209981262211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1209981262219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5889821 + ... + 6091793.

It is an arithmetic number, because the mean of its divisors is an integer number (153164963160).

Almost surely, 2^{1209981262211} is an apocalyptic number.

1209981262211 is a deficient number, since it is larger than the sum of its proper divisors (15338443069).

1209981262211 is an equidigital number, since it uses as much as digits as its factorization.

1209981262211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277885.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 1209981262211 in words is "one trillion, two hundred nine billion, nine hundred eighty-one million, two hundred sixty-two thousand, two hundred eleven".