11011111101012 has 96 divisors (see below), whose sum is σ = 28768474828800. Its totient is φ = 3249295758720.

The previous prime is 11011111100987. The next prime is 11011111101013. The reversal of 11011111101012 is 21010111111011.

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 (11011111101013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3224803 + ... + 5693994.

It is an arithmetic number, because the mean of its divisors is an integer number (299671612800).

Almost surely, 2^{11011111101012} is an apocalyptic number.

11011111101012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11011111101012 is an abundant number, since it is smaller than the sum of its proper divisors (17757363727788).

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

11011111101012 is a wasteful number, since it uses less digits than its factorization.

11011111101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8919061 (or 8919059 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 11011111101012 its reverse (21010111111011), we get a palindrome (32021222212023).

Subtracting 11011111101012 from its reverse (21010111111011), we obtain a palindrome (9999000009999).

The spelling of 11011111101012 in words is "eleven trillion, eleven billion, one hundred eleven million, one hundred one thousand, twelve".