11220520040 has 32 divisors (see below), whose sum is σ = 25249288680. Its totient is φ = 4487653632.

The previous prime is 11220520033. The next prime is 11220520049. The reversal of 11220520040 is 4002502211.

It can be written as a sum of positive squares in 4 ways, for example, as 10927357156 + 293162884 = 104534^2 + 17122^2 .

It is not an unprimeable number, because it can be changed into a prime (11220520049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504842 + ... + 526598.

Almost surely, 2^11220520040 is an apocalyptic number.

11220520040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220520040 is an abundant number, since it is smaller than the sum of its proper divisors (14028768640).

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

11220520040 is a wasteful number, since it uses less digits than its factorization.

11220520040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34661 (or 34657 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The spelling of 11220520040 in words is "eleven billion, two hundred twenty million, five hundred twenty thousand, forty".