11205722720 has 96 divisors (see below), whose sum is σ = 29506226400. Its totient is φ = 3996573696.

The previous prime is 11205722719. The next prime is 11205722741. The reversal of 11205722720 is 2722750211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56735 + ... + 160094.

It is an arithmetic number, because the mean of its divisors is an integer number (307356525).

Almost surely, 2^11205722720 is an apocalyptic number.

11205722720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11205722720 is an abundant number, since it is smaller than the sum of its proper divisors (18300503680).

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

11205722720 is a wasteful number, since it uses less digits than its factorization.

11205722720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216880 (or 216872 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The spelling of 11205722720 in words is "eleven billion, two hundred five million, seven hundred twenty-two thousand, seven hundred twenty".