11111212101012 has 24 divisors (see below), whose sum is σ = 25944380977536. Its totient is φ = 3701134594368.

The previous prime is 11111212100999. The next prime is 11111212101013. The reversal of 11111212101012 is 21010121211111.

11111212101012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11111212100982 and 11111212101000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111212101013) 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, 325328793 + ... + 325362944.

It is an arithmetic number, because the mean of its divisors is an integer number (1081015874064).

Almost surely, 2^{11111212101012} is an apocalyptic number.

11111212101012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111212101012 is an abundant number, since it is smaller than the sum of its proper divisors (14833168876524).

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

11111212101012 is a wasteful number, since it uses less digits than its factorization.

11111212101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650693167 (or 650693165 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11111212101012 its reverse (21010121211111), we get a palindrome (32121333312123).

The spelling of 11111212101012 in words is "eleven trillion, one hundred eleven billion, two hundred twelve million, one hundred one thousand, twelve".