1100121611112 has 32 divisors (see below), whose sum is σ = 3055893364800. Its totient is φ = 366707203632.

The previous prime is 1100121611111. The next prime is 1100121611119. The reversal of 1100121611112 is 2111161210011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1100121611111) 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, 2546577588 + ... + 2546578019.

It is an arithmetic number, because the mean of its divisors is an integer number (95496667650).

Almost surely, 2^{1100121611112} is an apocalyptic number.

1100121611112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1100121611112 is an abundant number, since it is smaller than the sum of its proper divisors (1955771753688).

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

1100121611112 is a wasteful number, since it uses less digits than its factorization.

1100121611112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5093155622 (or 5093155612 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 1100121611112 its reverse (2111161210011), we get a palindrome (3211282821123).

The spelling of 1100121611112 in words is "one trillion, one hundred billion, one hundred twenty-one million, six hundred eleven thousand, one hundred twelve".