11020012002 has 12 divisors (see below), whose sum is σ = 23876692710. Its totient is φ = 3673337328.

The previous prime is 11020011971. The next prime is 11020012009. The reversal of 11020012002 is 20021002011.

It can be written as a sum of positive squares in only one way, i.e., 10778800041 + 241211961 = 103821^2 + 15531^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11020012009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306111427 + ... + 306111462.

Almost surely, 2^11020012002 is an apocalyptic number.

11020012002 is an abundant number, since it is smaller than the sum of its proper divisors (12856680708).

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

11020012002 is a wasteful number, since it uses less digits than its factorization.

11020012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612222897 (or 612222894 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 11020012002 its reverse (20021002011), we get a palindrome (31041014013).

Subtracting 11020012002 from its reverse (20021002011), we obtain a palindrome (9000990009).

The spelling of 11020012002 in words is "eleven billion, twenty million, twelve thousand, two".