11021021000 has 64 divisors (see below), whose sum is σ = 28133688960. Its totient is φ = 4007640000.

The previous prime is 11021020991. The next prime is 11021021027. The reversal of 11021021000 is 12012011.

11021021000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489956 + ... + 511955.

It is an arithmetic number, because the mean of its divisors is an integer number (439588890).

Almost surely, 2^11021021000 is an apocalyptic number.

11021021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021021000 is an abundant number, since it is smaller than the sum of its proper divisors (17112667960).

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

11021021000 is a wasteful number, since it uses less digits than its factorization.

11021021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001943 (or 1001929 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11021021000 its reverse (12012011), we get a palindrome (11033033011).

The spelling of 11021021000 in words is "eleven billion, twenty-one million, twenty-one thousand".