1001211111112 has 32 divisors (see below), whose sum is σ = 1893375590400. Its totient is φ = 496316467584.

The previous prime is 1001211111053. The next prime is 1001211111137. The reversal of 1001211111112 is 2111111121001.

It is a junction number, because it is equal to n+sod(n) for n = 1001211111092 and 1001211111101.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1112089 + ... + 1799767.

It is an arithmetic number, because the mean of its divisors is an integer number (59167987200).

Almost surely, 2^{1001211111112} is an apocalyptic number.

It is an amenable number.

1001211111112 is a deficient number, since it is larger than the sum of its proper divisors (892164479288).

1001211111112 is a wasteful number, since it uses less digits than its factorization.

1001211111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689245 (or 689241 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1001211111112 its reverse (2111111121001), we get a palindrome (3112322232113).

It can be divided in two parts, 1001 and 211111112, that multiplied together give a palindrome (211322223112).

The spelling of 1001211111112 in words is "one trillion, one billion, two hundred eleven million, one hundred eleven thousand, one hundred twelve".