1211002211112 has 32 divisors (see below), whose sum is σ = 3036652090080. Its totient is φ = 402447862080.

The previous prime is 1211002211071. The next prime is 1211002211189. The reversal of 1211002211112 is 2111122001121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1211002211091 and 1211002211100.

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, 76213243 + ... + 76229130.

It is an arithmetic number, because the mean of its divisors is an integer number (94895377815).

Almost surely, 2^{1211002211112} is an apocalyptic number.

1211002211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211002211112 is an abundant number, since it is smaller than the sum of its proper divisors (1825649878968).

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

1211002211112 is a wasteful number, since it uses less digits than its factorization.

1211002211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152442713 (or 152442709 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1211002211112 its reverse (2111122001121), we get a palindrome (3322124212233).

The spelling of 1211002211112 in words is "one trillion, two hundred eleven billion, two million, two hundred eleven thousand, one hundred twelve".