1211101001112 has 32 divisors (see below), whose sum is σ = 3044480428080. Its totient is φ = 401469943680.

The previous prime is 1211101001111. The next prime is 1211101001189. The reversal of 1211101001112 is 2111001011121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211101001111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139394943 + ... + 139403630.

Almost surely, 2^{1211101001112} is an apocalyptic number.

1211101001112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211101001112 is an abundant number, since it is smaller than the sum of its proper divisors (1833379426968).

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

1211101001112 is a wasteful number, since it uses less digits than its factorization.

1211101001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278798763 (or 278798759 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1211101001112 its reverse (2111001011121), we get a palindrome (3322102012233).

The spelling of 1211101001112 in words is "one trillion, two hundred eleven billion, one hundred one million, one thousand, one hundred twelve".