11122020021 has 32 divisors (see below), whose sum is σ = 17382613248. Its totient is φ = 6192783360.

The previous prime is 11122019983. The next prime is 11122020053. The reversal of 11122020021 is 12002022111.

It is not a de Polignac number, because 11122020021 - 2⁶ = 11122019957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11122019979 and 11122020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 730341 + ... + 745413.

It is an arithmetic number, because the mean of its divisors is an integer number (543206664).

Almost surely, 2^11122020021 is an apocalyptic number.

It is an amenable number.

11122020021 is a deficient number, since it is larger than the sum of its proper divisors (6260593227).

11122020021 is a wasteful number, since it uses less digits than its factorization.

11122020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15981.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11122020021 its reverse (12002022111), we get a palindrome (23124042132).

The spelling of 11122020021 in words is "eleven billion, one hundred twenty-two million, twenty thousand, twenty-one".