11121121000012 has 24 divisors (see below), whose sum is σ = 20609324648640. Its totient is φ = 5232823215360.

The previous prime is 11121121000007. The next prime is 11121121000061. The reversal of 11121121000012 is 21000012112111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11121120999956 and 11121121000001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9530187 + ... + 10633282.

It is an arithmetic number, because the mean of its divisors is an integer number (858721860360).

Almost surely, 2^{11121121000012} is an apocalyptic number.

It is an amenable number.

11121121000012 is a deficient number, since it is larger than the sum of its proper divisors (9488203648628).

11121121000012 is a wasteful number, since it uses less digits than its factorization.

11121121000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20171601 (or 20171599 counting only the distinct ones).

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

Adding to 11121121000012 its reverse (21000012112111), we get a palindrome (32121133112123).

The spelling of 11121121000012 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-one million, twelve", and thus it is an aban number.