11012111321 has 8 divisors (see below), whose sum is σ = 11282223624. Its totient is φ = 10742071680.

The previous prime is 11012111317. The next prime is 11012111329. The reversal of 11012111321 is 12311121011.

It can be written as a sum of positive squares in 4 ways, for example, as 16491721 + 10995619600 = 4061^2 + 104860^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11012111321 - 2² = 11012111317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012111296 and 11012111305.

It is not an unprimeable number, because it can be changed into a prime (11012111329) 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, 411671 + ... + 437603.

It is an arithmetic number, because the mean of its divisors is an integer number (1410277953).

Almost surely, 2^11012111321 is an apocalyptic number.

It is an amenable number.

11012111321 is a deficient number, since it is larger than the sum of its proper divisors (270112303).

11012111321 is a wasteful number, since it uses less digits than its factorization.

11012111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36331.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11012111321 its reverse (12311121011), we get a palindrome (23323232332).

The spelling of 11012111321 in words is "eleven billion, twelve million, one hundred eleven thousand, three hundred twenty-one".