11212011120 has 80 divisors (see below), whose sum is σ = 34778979360. Its totient is φ = 2987999232.

The previous prime is 11212011119. The next prime is 11212011127. The reversal of 11212011120 is 2111021211.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a junction number, because it is equal to n+sod(n) for n = 11212011096 and 11212011105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212011127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393516 + ... + 421044.

It is an arithmetic number, because the mean of its divisors is an integer number (434737242).

Almost surely, 2^11212011120 is an apocalyptic number.

11212011120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212011120 is an abundant number, since it is smaller than the sum of its proper divisors (23566968240).

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

11212011120 is a wasteful number, since it uses less digits than its factorization.

11212011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29242 (or 29236 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11212011120 its reverse (2111021211), we get a palindrome (13323032331).

The spelling of 11212011120 in words is "eleven billion, two hundred twelve million, eleven thousand, one hundred twenty".