1211112101112 has 32 divisors (see below), whose sum is σ = 3047065486800. Its totient is φ = 401132669184.

The previous prime is 1211112101077. The next prime is 1211112101137. The reversal of 1211112101112 is 2111012111121.

It is a junction number, because it is equal to n+sod(n) for n = 1211112101091 and 1211112101100.

It is a congruent number.

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, 160706437 + ... + 160713972.

Almost surely, 2^{1211112101112} is an apocalyptic number.

1211112101112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211112101112 is an abundant number, since it is smaller than the sum of its proper divisors (1835953385688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211112101112 is a wasteful number, since it uses less digits than its factorization.

1211112101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321420575 (or 321420571 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1211112101112 its reverse (2111012111121), we get a palindrome (3322124212233).

The spelling of 1211112101112 in words is "one trillion, two hundred eleven billion, one hundred twelve million, one hundred one thousand, one hundred twelve".