11441312021 has 8 divisors (see below), whose sum is σ = 11551155000. Its totient is φ = 11331910080.

The previous prime is 11441311927. The next prime is 11441312033. The reversal of 11441312021 is 12021314411.

It can be written as a sum of positive squares in 4 ways, for example, as 2107819921 + 9333492100 = 45911^2 + 96610^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11441312021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11441311984 and 11441312002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11441312221) 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, 58010 + ... + 162011.

It is an arithmetic number, because the mean of its divisors is an integer number (1443894375).

Almost surely, 2^11441312021 is an apocalyptic number.

It is an amenable number.

11441312021 is a deficient number, since it is larger than the sum of its proper divisors (109842979).

11441312021 is a wasteful number, since it uses less digits than its factorization.

11441312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220519.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11441312021 its reverse (12021314411), we get a palindrome (23462626432).

The spelling of 11441312021 in words is "eleven billion, four hundred forty-one million, three hundred twelve thousand, twenty-one".