11220319602 has 18 divisors (see below), whose sum is σ = 24311666223. Its totient is φ = 3739956732.

The previous prime is 11220319601. The next prime is 11220319661. The reversal of 11220319602 is 20691302211.

11220319602 is a `hidden beast` number, since 1 + 1 + 2 + 20 + 31 + 9 + 602 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5610159801 + 5610159801 = 74901^2 + 74901^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=74901.

It is not an unprimeable number, because it can be changed into a prime (11220319601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 436923 + ... + 461889.

Almost surely, 2^11220319602 is an apocalyptic number.

11220319602 is an abundant number, since it is smaller than the sum of its proper divisors (13091346621).

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

11220319602 is an frugal number, since it uses more digits than its factorization.

11220319602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49942 (or 24972 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 11220319602 in words is "eleven billion, two hundred twenty million, three hundred nineteen thousand, six hundred two".