11020021002 has 80 divisors (see below), whose sum is σ = 25150274952. Its totient is φ = 3605575680.

The previous prime is 11020020953. The next prime is 11020021031. The reversal of 11020021002 is 20012002011.

It can be written as a sum of positive squares in 4 ways, for example, as 4518662841 + 6501358161 = 67221^2 + 80631^2 .

It is a super-4 number, since 4×11020021002⁴ (a number of 41 digits) contains 4444 as substring.

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

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 6649758 + ... + 6651414.

Almost surely, 2^11020021002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11020021002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12575137476).

11020021002 is an abundant number, since it is smaller than the sum of its proper divisors (14130253950).

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

11020021002 is a wasteful number, since it uses less digits than its factorization.

11020021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2396 counting only the distinct ones).

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

Adding to 11020021002 its reverse (20012002011), we get a palindrome (31032023013).

The spelling of 11020021002 in words is "eleven billion, twenty million, twenty-one thousand, two".