11220223021 has 8 divisors (see below), whose sum is σ = 12825005760. Its totient is φ = 9615913728.

The previous prime is 11220223019. The next prime is 11220223037. The reversal of 11220223021 is 12032202211.

It is a happy number.

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 11220223021 - 2¹ = 11220223019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220222986 and 11220223004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220220021) 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, 66031 + ... + 163708.

It is an arithmetic number, because the mean of its divisors is an integer number (1603125720).

Almost surely, 2^11220223021 is an apocalyptic number.

It is an amenable number.

11220223021 is a deficient number, since it is larger than the sum of its proper divisors (1604782739).

11220223021 is an equidigital number, since it uses as much as digits as its factorization.

11220223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236723.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11220223021 its reverse (12032202211), we get a palindrome (23252425232).

The spelling of 11220223021 in words is "eleven billion, two hundred twenty million, two hundred twenty-three thousand, twenty-one".