11110121012 has 6 divisors (see below), whose sum is σ = 19442711778. Its totient is φ = 5555060504.

The previous prime is 11110120999. The next prime is 11110121021. The reversal of 11110121012 is 21012101111.

It can be written as a sum of positive squares in only one way, i.e., 6192745636 + 4917375376 = 78694^2 + 70124^2 .

It is a super-4 number, since 4×11110121012⁴ (a number of 41 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11110120984 and 11110121002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388765123 + ... + 1388765130.

It is an arithmetic number, because the mean of its divisors is an integer number (3240451963).

Almost surely, 2^11110121012 is an apocalyptic number.

It is an amenable number.

11110121012 is a deficient number, since it is larger than the sum of its proper divisors (8332590766).

11110121012 is a wasteful number, since it uses less digits than its factorization.

11110121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777530257 (or 2777530255 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11110121012 its reverse (21012101111), we get a palindrome (32122222123).

The spelling of 11110121012 in words is "eleven billion, one hundred ten million, one hundred twenty-one thousand, twelve".