11020021312 has 28 divisors (see below), whose sum is σ = 21871729180. Its totient is φ = 5509034496.

The previous prime is 11020021301. The next prime is 11020021321. The reversal of 11020021312 is 21312002011.

It can be written as a sum of positive squares in 2 ways, for example, as 10311183936 + 708837376 = 101544^2 + 26624^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11020021292 and 11020021301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467014 + ... + 490042.

It is an arithmetic number, because the mean of its divisors is an integer number (781133185).

Almost surely, 2^11020021312 is an apocalyptic number.

It is an amenable number.

11020021312 is a deficient number, since it is larger than the sum of its proper divisors (10851707868).

11020021312 is an equidigital number, since it uses as much as digits as its factorization.

11020021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30518 (or 30508 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11020021312 its reverse (21312002011), we get a palindrome (32332023323).

The spelling of 11020021312 in words is "eleven billion, twenty million, twenty-one thousand, three hundred twelve".