11211020000 has 60 divisors (see below), whose sum is σ = 27580840056. Its totient is φ = 4484400000.

The previous prime is 11211019991. The next prime is 11211020003. The reversal of 11211020000 is 2011211.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11211020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211020003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 260276 + ... + 300275.

Almost surely, 2^11211020000 is an apocalyptic number.

11211020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211020000 is an abundant number, since it is smaller than the sum of its proper divisors (16369820056).

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

11211020000 is an frugal number, since it uses more digits than its factorization.

11211020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560581 (or 560558 counting only the distinct ones).

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

Adding to 11211020000 its reverse (2011211), we get a palindrome (11213031211).

The spelling of 11211020000 in words is "eleven billion, two hundred eleven million, twenty thousand".