221011000120 has 16 divisors (see below), whose sum is σ = 497274750360. Its totient is φ = 88404400032.

The previous prime is 221011000073. The next prime is 221011000121. The reversal of 221011000120 is 21000110122.

221011000120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 221011000097 and 221011000106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011000121) 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 3 ways as a sum of consecutive naturals, for example, 2762637462 + ... + 2762637541.

Almost surely, 2^221011000120 is an apocalyptic number.

221011000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011000120 is an abundant number, since it is smaller than the sum of its proper divisors (276263750240).

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

221011000120 is a wasteful number, since it uses less digits than its factorization.

221011000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525275014 (or 5525275010 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221011000120 its reverse (21000110122), we get a palindrome (242011110242).

The spelling of 221011000120 in words is "two hundred twenty-one billion, eleven million, one hundred twenty", and thus it is an aban number.