11020121320 has 32 divisors (see below), whose sum is σ = 26702602920. Its totient is φ = 4068967680.

The previous prime is 11020121309. The next prime is 11020121323. The reversal of 11020121320 is 2312102011.

It can be written as a sum of positive squares in 4 ways, for example, as 8249362276 + 2770759044 = 90826^2 + 52638^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 11020121320.

It is not an unprimeable number, because it can be changed into a prime (11020121323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10595751 + ... + 10596790.

Almost surely, 2^11020121320 is an apocalyptic number.

11020121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11020121320 is an abundant number, since it is smaller than the sum of its proper divisors (15682481600).

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

11020121320 is a wasteful number, since it uses less digits than its factorization.

11020121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21192565 (or 21192561 counting only the distinct ones).

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

Adding to 11020121320 its reverse (2312102011), we get a palindrome (13332223331).

The spelling of 11020121320 in words is "eleven billion, twenty million, one hundred twenty-one thousand, three hundred twenty".