11020021000 has 64 divisors (see below), whose sum is σ = 26415894960. Its totient is φ = 4300480000.

The previous prime is 11020020953. The next prime is 11020021031. The reversal of 11020021000 is 12002011.

It can be written as a sum of positive squares in 8 ways, for example, as 665330436 + 10354690564 = 25794^2 + 101758^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93391 + ... + 175390.

Almost surely, 2^11020021000 is an apocalyptic number.

11020021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11020021000 is an abundant number, since it is smaller than the sum of its proper divisors (15395873960).

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

11020021000 is a wasteful number, since it uses less digits than its factorization.

11020021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268843 (or 268829 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 11020021000 its reverse (12002011), we get a palindrome (11032023011).

The spelling of 11020021000 in words is "eleven billion, twenty million, twenty-one thousand".