11012122021 has 4 divisors (see below), whose sum is σ = 11019671200. Its totient is φ = 11004572844.

The previous prime is 11012121997. The next prime is 11012122031. The reversal of 11012122021 is 12022121011.

11012122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11012122021 - 2⁷ = 11012121893 is a prime.

It is a super-4 number, since 4×11012122021⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012121992 and 11012122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012122031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3772401 + ... + 3775318.

It is an arithmetic number, because the mean of its divisors is an integer number (2754917800).

Almost surely, 2^11012122021 is an apocalyptic number.

It is an amenable number.

11012122021 is a deficient number, since it is larger than the sum of its proper divisors (7549179).

11012122021 is an equidigital number, since it uses as much as digits as its factorization.

11012122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7549178.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11012122021 its reverse (12022121011), we get a palindrome (23034243032).

The spelling of 11012122021 in words is "eleven billion, twelve million, one hundred twenty-two thousand, twenty-one".