1201210311311 has 8 divisors (see below), whose sum is σ = 1230574376304. Its totient is φ = 1171849401280.

The previous prime is 1201210311307. The next prime is 1201210311347. The reversal of 1201210311311 is 1131130121021.

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

It is a cyclic number.

It is not a de Polignac number, because 1201210311311 - 2² = 1201210311307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201210311311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201210311361) 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 in 7 ways as a sum of consecutive naturals, for example, 8645 + ... + 1549998.

It is an arithmetic number, because the mean of its divisors is an integer number (153821797038).

Almost surely, 2^{1201210311311} is an apocalyptic number.

1201210311311 is a deficient number, since it is larger than the sum of its proper divisors (29364064993).

1201210311311 is a wasteful number, since it uses less digits than its factorization.

1201210311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577481.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1201210311311 its reverse (1131130121021), we get a palindrome (2332340432332).

The spelling of 1201210311311 in words is "one trillion, two hundred one billion, two hundred ten million, three hundred eleven thousand, three hundred eleven".