11125551012 has 24 divisors (see below), whose sum is σ = 25965858912. Its totient is φ = 3707625600.

The previous prime is 11125551011. The next prime is 11125551049. The reversal of 11125551012 is 21015552111.

11125551012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11125551012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11125551011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58414 + ... + 160197.

It is an arithmetic number, because the mean of its divisors is an integer number (1081910788).

Almost surely, 2^11125551012 is an apocalyptic number.

11125551012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11125551012 is an abundant number, since it is smaller than the sum of its proper divisors (14840307900).

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

11125551012 is a wasteful number, since it uses less digits than its factorization.

11125551012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222859 (or 222857 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 24.

The spelling of 11125551012 in words is "eleven billion, one hundred twenty-five million, five hundred fifty-one thousand, twelve".