11121121012 has 12 divisors (see below), whose sum is σ = 19876046400. Its totient is φ = 5442250616.

The previous prime is 11121121007. The next prime is 11121121019. The reversal of 11121121012 is 21012112111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11121120983 and 11121121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121121019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29577262 + ... + 29577637.

It is an arithmetic number, because the mean of its divisors is an integer number (1656337200).

Almost surely, 2^11121121012 is an apocalyptic number.

It is an amenable number.

11121121012 is a deficient number, since it is larger than the sum of its proper divisors (8754925388).

11121121012 is a wasteful number, since it uses less digits than its factorization.

11121121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59154950 (or 59154948 counting only the distinct ones).

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

Adding to 11121121012 its reverse (21012112111), we get a palindrome (32133233123).

The spelling of 11121121012 in words is "eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, twelve".