1210331111012 has 24 divisors (see below), whose sum is σ = 2127495148800. Its totient is φ = 602476672896.

The previous prime is 1210331110991. The next prime is 1210331111057. The reversal of 1210331111012 is 2101111330121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3555113 + ... + 3880655.

It is an arithmetic number, because the mean of its divisors is an integer number (88645631200).

Almost surely, 2^{1210331111012} is an apocalyptic number.

It is an amenable number.

1210331111012 is a deficient number, since it is larger than the sum of its proper divisors (917164037788).

1210331111012 is a wasteful number, since it uses less digits than its factorization.

1210331111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329675 (or 329673 counting only the distinct ones).

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

Adding to 1210331111012 its reverse (2101111330121), we get a palindrome (3311442441133).

The spelling of 1210331111012 in words is "one trillion, two hundred ten billion, three hundred thirty-one million, one hundred eleven thousand, twelve".