11010021000 has 256 divisors, whose sum is σ = 38350540800. Its totient is φ = 2606688000.

The previous prime is 11010020971. The next prime is 11010021019. The reversal of 11010021000 is 12001011.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11010021000.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1415121 + ... + 1422879.

It is an arithmetic number, because the mean of its divisors is an integer number (149806800).

Almost surely, 2^11010021000 is an apocalyptic number.

11010021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11010021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19175270400).

11010021000 is an abundant number, since it is smaller than the sum of its proper divisors (27340519800).

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

11010021000 is a wasteful number, since it uses less digits than its factorization.

11010021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7837 (or 7823 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 11010021000 its reverse (12001011), we get a palindrome (11022022011).

The spelling of 11010021000 in words is "eleven billion, ten million, twenty-one thousand".