10011223220 has 12 divisors (see below), whose sum is σ = 21023568804. Its totient is φ = 4004489280.

The previous prime is 10011223219. The next prime is 10011223241. The reversal of 10011223220 is 2232211001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2869959184 + 7141264036 = 53572^2 + 84506^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10011223195 and 10011223204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250280561 + ... + 250280600.

It is an arithmetic number, because the mean of its divisors is an integer number (1751964067).

Almost surely, 2^10011223220 is an apocalyptic number.

10011223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10011223220 is an abundant number, since it is smaller than the sum of its proper divisors (11012345584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10011223220 is a wasteful number, since it uses less digits than its factorization.

10011223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500561170 (or 500561168 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10011223220 its reverse (2232211001), we get a palindrome (12243434221).

It can be divided in two parts, 1001 and 1223220, that added together give a palindrome (1224221).

The spelling of 10011223220 in words is "ten billion, eleven million, two hundred twenty-three thousand, two hundred twenty".