11111011010100 has 72 divisors (see below), whose sum is σ = 35719842811520. Its totient is φ = 2962936268640.

The previous prime is 11111011010089. The next prime is 11111011010117. The reversal of 11111011010100 is 101011011111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2057591932 + ... + 2057597331.

Almost surely, 2^{11111011010100} is an apocalyptic number.

11111011010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111011010100 is an abundant number, since it is smaller than the sum of its proper divisors (24608831801420).

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

11111011010100 is a wasteful number, since it uses less digits than its factorization.

11111011010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115189286 (or 4115189273 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 11111011010100 its reverse (101011011111), we get a palindrome (11212022021211).

The spelling of 11111011010100 in words is "eleven trillion, one hundred eleven billion, eleven million, ten thousand, one hundred".