11127721240 has 32 divisors (see below), whose sum is σ = 25041901680. Its totient is φ = 4450283392.

The previous prime is 11127721237. The next prime is 11127721259. The reversal of 11127721240 is 4212772111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11127721199 and 11127721208.

It is a congruent number.

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, 230922 + ... + 274918.

Almost surely, 2^11127721240 is an apocalyptic number.

11127721240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11127721240 is an abundant number, since it is smaller than the sum of its proper divisors (13914180440).

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

11127721240 is a wasteful number, since it uses less digits than its factorization.

11127721240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50331 (or 50327 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The spelling of 11127721240 in words is "eleven billion, one hundred twenty-seven million, seven hundred twenty-one thousand, two hundred forty".