221011033120 has 48 divisors (see below), whose sum is σ = 525265207488. Its totient is φ = 87875034880.

The previous prime is 221011033109. The next prime is 221011033213. The reversal of 221011033120 is 21330110122.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 221011033094 and 221011033103.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4108966 + ... + 4162405.

It is an arithmetic number, because the mean of its divisors is an integer number (10943025156).

Almost surely, 2^221011033120 is an apocalyptic number.

221011033120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011033120 is an abundant number, since it is smaller than the sum of its proper divisors (304254174368).

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

221011033120 is a wasteful number, since it uses less digits than its factorization.

221011033120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271553 (or 8271545 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221011033120 its reverse (21330110122), we get a palindrome (242341143242).

The spelling of 221011033120 in words is "two hundred twenty-one billion, eleven million, thirty-three thousand, one hundred twenty".