1111211110012 has 6 divisors (see below), whose sum is σ = 1944619442528. Its totient is φ = 555605555004.

The previous prime is 1111211109979. The next prime is 1111211110013. The reversal of 1111211110012 is 2100111121111.

It is a junction number, because it is equal to n+sod(n) for n = 1111211109974 and 1111211110001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111211110013) 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 as a sum of consecutive naturals, namely, 138901388748 + ... + 138901388755.

Almost surely, 2^{1111211110012} is an apocalyptic number.

It is an amenable number.

1111211110012 is a deficient number, since it is larger than the sum of its proper divisors (833408332516).

1111211110012 is a wasteful number, since it uses less digits than its factorization.

1111211110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277802777507 (or 277802777505 counting only the distinct ones).

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

Adding to 1111211110012 its reverse (2100111121111), we get a palindrome (3211322231123).

The spelling of 1111211110012 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred ten thousand, twelve".