11023013021 has 2 divisors, whose sum is σ = 11023013022. Its totient is φ = 11023013020.

The previous prime is 11023012999. The next prime is 11023013081. The reversal of 11023013021 is 12031032011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8717956900 + 2305056121 = 93370^2 + 48011^2 .

It is a cyclic number.

It is not a de Polignac number, because 11023013021 - 2³⁰ = 9949271197 is a prime.

It is a super-2 number, since 2×11023013021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11023012987 and 11023013005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11023013081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511506510 + 5511506511.

It is an arithmetic number, because the mean of its divisors is an integer number (5511506511).

Almost surely, 2^11023013021 is an apocalyptic number.

It is an amenable number.

11023013021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11023013021 is an equidigital number, since it uses as much as digits as its factorization.

11023013021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 11023013021 its reverse (12031032011), we get a palindrome (23054045032).

The spelling of 11023013021 in words is "eleven billion, twenty-three million, thirteen thousand, twenty-one".