11111121210012 has 48 divisors (see below), whose sum is σ = 26178283203072. Its totient is φ = 3667661115840.

The previous prime is 11111121209987. The next prime is 11111121210053. The reversal of 11111121210012 is 21001212111111.

It is a junction number, because it is equal to n+sod(n) for n = 11111121209973 and 11111121210000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70319937 + ... + 70477767.

It is an arithmetic number, because the mean of its divisors is an integer number (545380900064).

Almost surely, 2^{11111121210012} is an apocalyptic number.

11111121210012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111121210012 is an abundant number, since it is smaller than the sum of its proper divisors (15067161993060).

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

11111121210012 is a wasteful number, since it uses less digits than its factorization.

11111121210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214898 (or 214896 counting only the distinct ones).

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

Adding to 11111121210012 its reverse (21001212111111), we get a palindrome (32112333321123).

The spelling of 11111121210012 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-one million, two hundred ten thousand, twelve".