11015021053 has 4 divisors (see below), whose sum is σ = 11015253180. Its totient is φ = 11014788928.

The previous prime is 11015020943. The next prime is 11015021071. The reversal of 11015021053 is 35012051011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9952456644 + 1062564409 = 99762^2 + 32597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11015021053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11015021053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11015021093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16300 + ... + 149317.

It is an arithmetic number, because the mean of its divisors is an integer number (2753813295).

Almost surely, 2^11015021053 is an apocalyptic number.

It is an amenable number.

11015021053 is a deficient number, since it is larger than the sum of its proper divisors (232127).

11015021053 is an equidigital number, since it uses as much as digits as its factorization.

11015021053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232126.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 11015021053 its reverse (35012051011), we get a palindrome (46027072064).

The spelling of 11015021053 in words is "eleven billion, fifteen million, twenty-one thousand, fifty-three".