11012022021 has 64 divisors (see below), whose sum is σ = 19909564416. Its totient is φ = 5228064000.

The previous prime is 11012021989. The next prime is 11012022031. The reversal of 11012022021 is 12022021011.

It is not a de Polignac number, because 11012022021 - 2⁵ = 11012021989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11012021988 and 11012022006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012022031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 285150 + ... + 321456.

It is an arithmetic number, because the mean of its divisors is an integer number (311086944).

Almost surely, 2^11012022021 is an apocalyptic number.

11012022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012022021 is a deficient number, since it is larger than the sum of its proper divisors (8897542395).

11012022021 is a wasteful number, since it uses less digits than its factorization.

11012022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36442.

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

Adding to 11012022021 its reverse (12022021011), we get a palindrome (23034043032).

The spelling of 11012022021 in words is "eleven billion, twelve million, twenty-two thousand, twenty-one".