11212100111020 has 12 divisors (see below), whose sum is σ = 23545410233184. Its totient is φ = 4484840044400.

The previous prime is 11212100110997. The next prime is 11212100111063. The reversal of 11212100111020 is 2011100121211.

It is a happy number.

It is a super-2 number, since 2×11212100111020² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280302502756 + ... + 280302502795.

It is an arithmetic number, because the mean of its divisors is an integer number (1962117519432).

Almost surely, 2^{11212100111020} is an apocalyptic number.

11212100111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212100111020 is an abundant number, since it is smaller than the sum of its proper divisors (12333310122164).

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

11212100111020 is a wasteful number, since it uses less digits than its factorization.

11212100111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560605005560 (or 560605005558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11212100111020 its reverse (2011100121211), we get a palindrome (13223200232231).

The spelling of 11212100111020 in words is "eleven trillion, two hundred twelve billion, one hundred million, one hundred eleven thousand, twenty".