1121111101212 has 48 divisors (see below), whose sum is σ = 2769893989632. Its totient is φ = 351709689600.

The previous prime is 1121111101193. The next prime is 1121111101217. The reversal of 1121111101212 is 2121011111211.

It is a junction number, because it is equal to n+sod(n) for n = 1121111101191 and 1121111101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121111101217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7978353 + ... + 8117655.

It is an arithmetic number, because the mean of its divisors is an integer number (57706124784).

Almost surely, 2^{1121111101212} is an apocalyptic number.

1121111101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121111101212 is an abundant number, since it is smaller than the sum of its proper divisors (1648782888420).

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

1121111101212 is a wasteful number, since it uses less digits than its factorization.

1121111101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178778 (or 178776 counting only the distinct ones).

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

Adding to 1121111101212 its reverse (2121011111211), we get a palindrome (3242122212423).

Subtracting 1121111101212 from its reverse (2121011111211), we obtain a palindrome (999900009999).

The spelling of 1121111101212 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred one thousand, two hundred twelve".