1231211310211 has 8 divisors (see below), whose sum is σ = 1231632864000. Its totient is φ = 1230789837120.

The previous prime is 1231211310193. The next prime is 1231211310227. The reversal of 1231211310211 is 1120131121321.

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 1231211310211 - 2¹³ = 1231211302019 is a prime.

It is a super-3 number, since 3×1231211310211³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231211310281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47489310 + ... + 47515228.

It is an arithmetic number, because the mean of its divisors is an integer number (153954108000).

Almost surely, 2^{1231211310211} is an apocalyptic number.

1231211310211 is a deficient number, since it is larger than the sum of its proper divisors (421553789).

1231211310211 is an equidigital number, since it uses as much as digits as its factorization.

1231211310211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40349.

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

Adding to 1231211310211 its reverse (1120131121321), we get a palindrome (2351342431532).

The spelling of 1231211310211 in words is "one trillion, two hundred thirty-one billion, two hundred eleven million, three hundred ten thousand, two hundred eleven".